Pangolins are mammals comprising the family Manidae within the order Pholidota, distinguished as the only placental mammals with large, overlapping keratin scales covering most of their bodies, akin to those in nails and claws.[1] These toothless insectivores subsist primarily on ants and termites, which they capture using an elongate, sticky tongue anchored to the ribcage and capable of extending far beyond the head.[1] Native to sub-Saharan Africa and tropical Asia, the eight extant species vary in size from the 30 cm Philippine pangolin to the 1.8 m giant pangolin, with habits ranging from arboreal to terrestrial and predominantly nocturnal lifestyles marked by solitary behavior and defensive curling into an armored ball.[2][1]All pangolin species are currently assessed by the IUCN as vulnerable to critically endangered, driven chiefly by intense poaching for their scales—prized in traditional Asian medicine despite lacking empirical evidence of medicinal value—and for bushmeat, rendering them among the most trafficked wild mammals.[2][2] Conservation efforts, including CITESAppendix I listings since 2016, have curbed some legal trade but face challenges from persistent illegal markets and data gaps on population sizes, underscoring the need for enhanced enforcement and habitatmonitoring.[2] Their evolutionary isolation, with no close living relatives beyond fossil Pholidota, highlights unique adaptations like acute olfaction over vision and scale regeneration, yet underscores vulnerability to anthropogenic pressures absent natural predators capable of breaching their defenses.[1][1]
Etymology
Origins and Linguistic Evolution
The English term "pangolin" derives from the Malay word pengguling, an agentive noun formed from the prefixpeng- (indicating a performer of an action) and the root guling or giling, meaning "to roll" or "roller," reflecting the animal's defensive behavior of curling into a tight ball.[3][4] This etymology is corroborated across linguistic sources, emphasizing the descriptive nature of the name in its original Austronesian context, where Malay speakers in Southeast Asia observed the creature's rolling posture.[5]Early Europeandocumentation of the term appeared in 1734, when it was recorded as "Panggoeling" in descriptions attributed to Javanese and other Oriental peoples, translating to "convolutorem" (Latin for "one who rolls up"), likely via Dutch colonial interactions in the region.[5] The word entered English by 1774, as noted in dictionaries, establishing it as a direct borrowing from Malay dialects, with possible partial influence from Frenchpangolin, which shares the same Malay origin through parallel Europeanexploration and trade routes.[6] In English usage, the term has remained stable without significant phonetic or semantic shifts, retaining its reference to the eight species of scaly mammals in the order Pholidota, distinct from alternative descriptors like "scaly anteater."[3]Linguistically, the adoption exemplifies colonial-era loanwords from indigenous languages into Indo-European ones, preserving the onomatopoeic or behavioral essence of pengguling amid broader Austronesian lexical influences in zoological nomenclature. Variants in related languages, such as Taiwanese Hokkienpa̍t-ki-lîm (echoing rolling or scaling traits), demonstrate parallel descriptive evolutions but do not directly impact the English lineage.[7] No evidence suggests pre-Malay roots for the term, as its formation aligns with Proto-Malayic patterns for agent nouns describing animal behaviors.[5]
Physical Characteristics
Morphology and Adaptations
Pangolins exhibit a distinctive morphology characterized by a body length ranging from 30 to 100 cm, excluding the tail which adds 10 to 90 cm, with weights varying from 1.5 to 33 kg across the eight species.[8] Their dorsal surface, including the head, trunk, limbs, and tail, is covered in large, overlapping keratinous scales that constitute approximately 20-25% of body mass, leaving the ventral side, inner limbs, and underside of the head soft-skinned.[9] These scales, composed of both α- and β-keratin similar to human fingernails, form a flexible dermal armor unique among mammals.[10]The head features an elongated, tubular snout adapted for probing insect nests, small eyes indicative of reliance on olfaction and audition over vision, and reduced external ears.[11] Lacking teeth entirely, pangolins possess a narrow, edentulous skull with dense bone for structural reinforcement.[12] Forelimbs are stout with powerful, curved claws—particularly enlarged on digits II and III—enabling efficient excavation of termite mounds and ant nests, while hindlimbs support quadrupedal locomotion with a digitigrade stance.[13]The tail varies by species: prehensile and grasping in arboreal forms like the black-bellied pangolin (Phataginus tetradactyla), facilitating branch suspension and navigation, sometimes exceeding body length and comprising up to 47 vertebrae.[14] In terrestrial species, it aids balance during foraging.[15]These traits underpin key adaptations for survival. Scales provide mechanical protection against predators and environmental stressors, interlocking to deflect attacks and contributing to innate immunity by forming a barrier to pathogens.[16] When threatened, pangolins curl into a near-impenetrable ball, tucking vulnerable undersides inward and erecting scales via underlying musculature, a behavior effective against large carnivores.[14] Limb modifications support myrmecophagous foraging, with claws optimized for soil penetration and scale coverage extending to limbs for abrasionresistance during digging.[17]
Sensory and Locomotor Features
Pangolins possess limited visual capabilities, characterized by small eyes suited to nocturnal or crepuscular activity, which compels reliance on olfaction and audition for prey detection and environmental awareness.[18][19] Their olfactory system is acutely sensitive, facilitating the location of subterranean ant and termite colonies through chemical cues.[20] Experimental assessments confirm that captive pangolins integrate smell, hearing, and residual vision to identify and pursue food sources, with olfaction dominating in obscured conditions.[21] Auditory processing remains underexplored genomically, though behavioral evidence underscores its role in predator evasion and foraging.[22] Protective adaptations include muscular closures for nostrils and ear canals, shielding against insect swarms during nest raids.[23]Locomotor adaptations emphasize digging efficiency and habitat versatility, with robust forelimbs bearing three elongated, curved claws on each manus for excavating soil and dismantling arboreal nests.[24] Primarily quadrupedal, pangolins ambulate with a deliberate gait, often dragging their tails and swaying heads to scan for scents, though terrestrial species like Smutsia temminckii can briefly shift to bipedal locomotion for transport or vigilance.[25] Arboreal taxa, such as the black-bellied pangolin (Phataginus tetradactyla), employ semi-prehensile tails and hooked digits for proficient tree climbing, enabling access to elevated termite galleries.[14][26] All species demonstrate swimming proficiency via limb paddling, aiding traversal of water barriers in fragmented habitats.[27]
Habitat and Distribution
Geographic Range by Species
Pangolins comprise eight extant species, evenly divided between Asia and sub-Saharan Africa, with distributions shaped by tropical and subtropical habitats. Asian species occupy diverse forested regions from the Indian subcontinent to Southeast Asia and island archipelagos, while African species span equatorial forests, savannas, and woodlands across western, central, eastern, and southern extents. Ranges reflect historical biogeographic barriers, including the Wallace Line separating Asian island populations, and are increasingly fragmented by habitat loss and poaching pressures documented since the early 2000s.[28][29]The Chinese pangolin (Manis pentadactyla) inhabits southern China, Taiwan, Hong Kong, the Himalayan foothills of Nepal and Bhutan, northern India, and extends into northern Southeast Asia including Myanmar and Vietnam, with records from elevations up to 2,500 meters.[30][31] Its range has contracted due to overexploitation, with populations declining by over 90% in China since the 1960s based on seizure data and field surveys.[32]The Indian pangolin (Manis crassicaudata) is distributed across South Asia, including Pakistan, India, Nepal, Bangladesh, and Sri Lanka, favoring lowland forests and grasslands up to 2,000 meters.[33] Densities are lowest at range peripheries in Pakistan and Bangladesh, with core populations in central India showing home ranges of 2-10 km² from radio-tracking studies conducted in the 2010s.[34]The Sunda pangolin (Manis javanica) ranges widely across Southeast Asia, from Myanmar and Thailand through Indochina to Peninsular Malaysia, Singapore, and Indonesian islands including Borneo, Sumatra, and Java, up to 1,700 meters elevation.[35][36] Genetic studies indicate phylogeographic structure across this extent, with home ranges averaging 1.5-4 km² in translocated individuals monitored via GPS in Vietnam forests during 2020-2023.[37]The Philippine pangolin (Manis culionensis), endemic to the Palawan region, occurs on Palawan, Culion, Busuanga, and adjacent Calamian Islands, with sightings in 17 of 24 Palawan municipalities as of camera-trap surveys in 2020.[38][39] Its restricted range, spanning under 50,000 km², limits populations to an estimated few thousand individuals based on density models from 2010s field data.[40]In Africa, the white-bellied pangolin (Phataginus tricuspis) occupies West and Central African rainforests from Guinea eastward to southwestern Kenya and southward to Angola, including gallery forests and swamp edges.[41][42] It remains relatively widespread, with records from 20+ countries, though poaching has reduced densities by 50-80% in surveyed West African sites since 2000.[43]The black-bellied pangolin (Phataginus tetradactyla) has a patchy distribution in West and Central Africa, from Sierra Leone to Ghana, with gaps before reappearing in Cameroon, Equatorial Guinea, Gabon, and Congo republics.[44][45] Arboreal habits confine it to forested zones, where encounter rates from line-transect surveys indicate low abundances, under 1 individual per 10 km².[46]The giant pangolin (Smutsia gigantea), the largest species, ranges across West and Central Africa from Senegal to Uganda and Angola, inhabiting primary rainforests, gallery forests, and secondary growth.[47][48]Body lengths exceed 1.8 meters in Ugandan specimens, with distributions mapped across 15 countries via museum records and recent sightings up to 2023.[49]Temminck's ground pangolin (Smutsia temminckii) is found in southern and eastern Africa, from South Africa northward through Namibia, Botswana, Zimbabwe, Zambia, Mozambique, and into East African savannas, with home ranges of 5-11 km² documented in South African tracking studies.[50][51] It prefers open woodlands and avoids dense forests, with continuous occupancy in protected areas like Kruger National Park confirmed by annual monitoring since the 1990s.[52]
Preferred Environments and Microhabitats
Pangolins occupy diverse environments across sub-Saharan Africa and tropical Asia, ranging from tropical forests and savannas to grasslands, woodlands, and even arid or cultivated areas, with habitat selection influenced by species-specific adaptations for foraging on ants and termites. Terrestrial species, predominant among both African and Asian pangolins, favor open habitats like savannas, dry woodlands, and agricultural edges where prey is abundant and soil is suitable for burrowing, while arboreal species such as the black-bellied and white-bellied pangolins (Phataginus spp.) are restricted to forested regions with ample tree cover. [53][29][27]African ground pangolins, including the giant (Smutsia gigantea) and Temminck's (Smutsia temminckii), prefer sandy soils in woodlands and savannas proximate to water bodies, enabling efficient excavation of extensive burrow systems up to 3.5 meters deep for shelter and thermoregulation. In contrast, Asian species like the Indian pangolin (Manis crassicaudata) thrive in grasslands, secondary forests, and semi-arid zones, demonstrating tolerance for human-modified landscapes such as farmlands, provided rocky outcrops or loose soil are available for dens. The Chinese pangolin (Manis pentadactyla) utilizes a broader spectrum, including primary forests, bamboo stands, and grasslands at elevations up to 3,000 meters, with occupancy models showing higher detection in areas of medium canopy density that facilitate groundforaging while offering partial concealment. [8][54][55]Microhabitats are typically centered around prey concentrations and defensive refugia; terrestrial pangolins excavate burrows near ant and termite mounds, often lining them with vegetation for insulation and moisture retention, or repurpose natural features like rock crevices and boulder bases for resting sites that deter predators. Arboreal forms select hollow trees or dense foliage for diurnal roosting, adapting to vertical microhabitats in humid forests where bark-dwelling insects abound. Habitat stratification studies for the Indian pangolin reveal exclusive use of rocky terrains for burrow initiation, underscoring a preference for structurally stable microhabitats that minimize excavation effort and enhance predator evasion through rapid enclosure. These selections reflect causal adaptations to local edaphic conditions, prey distribution, and predation pressures, rather than broad environmental tolerance alone. [56][57][58]
Behavior and Ecology
Daily and Seasonal Patterns
Pangolins demonstrate predominantly nocturnal activity rhythms, with most species emerging from burrows, nests, or curled resting positions after dusk to forage for ants and termites. Chinese pangolins (Manis pentadactyla) exhibit peak activity between 22:00 and 02:00, with overall nocturnal patterns starting after 18:00 and concentrating between 22:00 and 04:00.[59][60] Similarly, Indian pangolins (Manis crassicaudata) typically exit burrows between 18:00 and midnight, remaining active through the night in a secretive, solitary manner.[61][62] Sunda pangolins (Manis javanica) show unimodal nocturnal peaks around 03:00–04:00, while captive observations confirm red-light illuminated nocturnal foraging without disruption to natural rhythms.[37][63]Diurnal activity is rare but documented in specific contexts, such as occasional daytime movements in white-bellied pangolins (Phataginus tricuspis) during dam-pup interactions, indicating flexibility beyond strict nocturnality. Cape pangolins (Manis temminckii) in Zimbabwe displayed one instance of strictly diurnal foraging, suggesting intraspecific variability influenced by local conditions like prey availability or predation risk.[64]Seasonally, activity patterns adjust to environmental cues, particularly temperature and food resources. Temminck's ground pangolins shift from predominantly nocturnal foraging in summer to increased diurnal activity in winter, likely to minimize thermoregulatory costs in cooler conditions while maintaining body temperature precision.[65] Breeding behaviors show species-specific seasonality; Chinese pangolins mate primarily in summer and fall, with gestation lasting 6–7 months, potentially aligning activity peaks with resource abundance post-monsoon.[66][67] In contrast, Malayan pangolins (Manis javanica) lack strict seasonal mating, with observations across all months, reflecting equatorial stability in tropical habitats.[68] Pangolins do not migrate seasonally, instead maintaining stable home ranges year-round, with activity intensity varying by dry-wet cycles affecting termite mound accessibility.[60]
Diet and Foraging Strategies
Pangolins are obligate myrmecophages, deriving nearly their entire nutrition from ants (Formicidae) and termites (Isoptera), with dietary analyses confirming these as the predominant prey across species.[69][70] Some species, such as the Chinese pangolin (Manis pentadactyla), consume over 70 ant species alongside a smaller number of termite species, with ants comprising the majority of intake.[71] Supplements may include other invertebrates like bee larvae, earthworms, and fly pupae, though these constitute minor fractions of the diet; vegetable matter is rare and incidental.[69] An adult pangolin can ingest up to 70 million insects annually, reflecting high metabolic demands from their keratinous scales and low-energy prey.[14]Devoid of teeth, pangolins rely on a specialized feeding apparatus: a long, prehensile tongue coated in viscous saliva that extends up to 60 cm—often exceeding head-body length—to lap insects directly from nests.[72][73] The tongue's rapid protrusion and retraction, aided by hyoid bone modifications akin to those in anteaters, enables efficient capture of elusive prey, with digestive enzymes adapted to break down chitinous exoskeletons of ants and termites.[73] Forelimbs equipped with robust, curved claws excavate nests, breaking into hardened mounds or soil galleries to access colonies, a process that can disturb up to several kilograms of substrate per foraging bout.[74]Foraging occurs nocturnally and solitarily, with pangolins covering home ranges of 1–10 km² depending on prey density and habitat, prioritizing colonies via olfactory detection over visual or auditory cues.[21] Acute smell guides precise targeting, allowing differentiation of ant versus termite scents and tracking subterranean trails, while minimal eyesight limits reliance on sight.[21] Terrestrial species like Temminck's pangolin (Phataginus tetradactyla) focus on ground-level digs, increasing foragingduration in resource-scarce dry seasons to select energy-dense prey and maintain caloric intake.[75] Arboreal species, such as the Sunda pangolin (Manis javanica), integrate vertical climbing and branch-tearing to raid tree-nesting colonies, adapting strategies to canopy microhabitats.[21] Seasonal shifts occur, with drier periods prompting extended activity windows or prey specialization to offset reduced availability, underscoring limited dietary flexibility constrained by morphological specialization.[75]
Reproduction and Development
Pangolins are solitary mammals that mate infrequently, with males locating receptive females via pheromones and approaching cautiously before mounting from the side to navigate the female's scaled armor.[67][76] Mating sessions are brief, typically lasting under 40 minutes in captive observations of species like the Chinese pangolin (Manis pentadactyla).[77] Reproductive cycles vary by species and environment; for instance, wild Chinese pangolins exhibit seasonal mating from November to March, while captive individuals and some Asian species like the Sunda pangolin (Manis javanica) show year-round breeding potential.[78][79]Gestation lengths differ across species, with African tree pangolins (Phataginus tricuspis) averaging around 139 days and Asian species such as the Malayan pangolin (Manis javanica) ranging from 154 to 203 days in captivity.[80][81]Chinese pangolins have a prolonged gestation of 6 to 7 months, often resulting in births from January to September following winter-spring matings.[66] Females typically produce a single offspring per pregnancy, though litter sizes of one predominate across genera, with sex ratios at birth near 1:1 in observed Sunda pangolin captives (7 females to 8 males among 15 births).[80][79]Newborn pangolins, termed pangopups, weigh 170–450 grams depending on species and emerge hairless except for soft, pliable scales that harden within hours to days post-birth, providing initial protection.[56] Maternal care is exclusively female-driven; the mother nurses the pup for approximately 3 months while carrying it clinging to her back or tail during foraging and movement.[56][82] Pups begin accompanying the mother on foraging trips after weaning and remain dependent until nearly adult size, with independence achieved around 4–5 months in some species, though exact timelines vary.[82]Sexual maturity is reached early, often by 6–12 months of age; Sunda pangolins may breed as young as 6–7 months, while general estimates place it at one year for most species.[79]Captive breeding data indicate physiological flexibility, with non-seasonal reproduction possible under controlled conditions, contrasting wild seasonal patterns and highlighting environmental influences on timing.[83] Limited wild observations underscore gaps in natural parental investment details, primarily derived from captive studies.[84]
Social Interactions and Natural Predators
Pangolins exhibit predominantly solitary social structures, with individuals typically interacting only during mating periods or when females care for offspring.[85][86] Males and females do not form lasting pair bonds, and encounters between adults outside of reproduction are rare, often limited to agonistic interactions such as fights during mating seasons from May to July.[80] Genetic analyses indicate a primarily polygynous mating system among Chinese pangolins, where some females show low mate fidelity.[87] Courtship behaviors are minimal, with males adopting a ventrolateral position for copulation without elaborate displays.[68]Maternal care represents the primary non-reproductive social interaction, as females give birth to a single offspring after a gestation period varying by species, typically carrying the young on their prehensile tail or back during foraging.[88][89]Mothers protect juveniles by curling into a defensive ball around them when threatened, reducing exposure until the young can fend for themselves after several months.[90] Juveniles remain dependent on the mother for locomotion and protection, riding on her tail base during activities, before dispersing independently.[91]Natural predators of pangolins are limited due to their keratin scales, which provide flexible armor, and primary defense mechanism of rolling into a tight ball to shield vulnerable undersides.[92][93] Large carnivores such as lions, leopards, and spotted hyenas can occasionally prey upon them by prying open the curled form or targeting unarmored areas, particularly vulnerable juveniles.[94][95] Some species deploy additional deterrents, including sharp claws for slashing and release of a foul-smelling acid from anal glands akin to skunk spray.[96][97] Despite these adaptations, predation pressure is low compared to anthropogenic threats, as the armored posture effectively thwarts most attempts by smaller predators or opportunistic feeders.[98]
Taxonomy and Evolution
Species Classification
Pangolins comprise the monotypic family Manidae within the mammalian order Pholidota, which includes three extant genera and eight recognized species divided phylogenetically between Asian and African clades. The genus Manis encompasses four Asian species, characterized by terrestrial habits and overlapping distributions in subtropical forests and grasslands. The African genera Phataginus (two arboreal species adapted to tree-climbing with prehensile tails) and Smutsia (two ground-dwelling species with robust builds for burrowing) reflect convergent adaptations to similar myrmecophagous diets despite geographic separation.[99][100]The following table enumerates the species with their scientific and common names, grouped by genus:
This classification, established through morphological and genetic analyses, underscores the family's isolation from other mammals, with no close living relatives outside Pholidota; fossil evidence supports divergence from xenarthran-like ancestors around 60 million years ago, though extant taxonomy remains stable without recent revisions.[99]
Phylogenetic Relationships
Pangolins (order Pholidota) are classified within the placental mammals (Eutheria), specifically in the cohort Ferungulata of the superorder Laurasiatheria, where they form the mirorder Ferae as the sister group to Carnivora. This positioning is primarily supported by molecular phylogenies derived from concatenated analyses of mitochondrial genomes and multiple nuclear loci, which consistently recover Pholidota + Carnivora as a clade to the exclusion of other laurasiatherians like Perissodactyla and Cetartiodactyla.[102][103] Earlier morphological hypotheses linking Pholidota to Xenarthra (e.g., due to shared myrmecophagous adaptations like elongated snouts and sticky tongues) have been refuted by these genetic data, attributing such traits to convergent evolution driven by similar insectivorous diets rather than shared ancestry.[102][104]The divergence between Pholidota and Carnivora is estimated at approximately 70–80 million years ago during the Late Cretaceous, based on Bayesian relaxed-clock models calibrated with fossil constraints from laurasiatherian stem taxa.[105] Within Ferae, pangolins represent a highly derived lineage, with genomic evidence indicating accelerated molecular evolution in traits related to scale formation (e.g., keratin-associated genes) and sensory adaptations, though no unique synapomorphies beyond keratinous scales unite them exclusively with carnivorans at higher levels.[103]Among the eight extant pangolin species (four African: Smutsia gigantea, S. temminckii, Phataginus tricuspis, P. tetradactyla; four Asian: Manis crassicaudata, M. javanica, M. pentadactyla, M. culionensis), molecular phylogenies reveal paraphyly of African taxa. Ground-dwelling African species in Smutsia form the basal lineage, diverging around 38–45 million years ago (Oligocene), followed by arboreal African Phataginus (sister to Asian Manis, split ~28–38 million years ago in the Eocene–Oligocene), with Asian species monophyletic and further subdivided: M. pentadactyla (Chinese) basal among Asians (~17 million years ago), then M. crassicaudata (Indian, ~10 million years ago), and a clade of M. javanica + M. culionensis (Malayan and Philippine, ~5–7 million years ago).[105][106] These relationships are robust across datasets including full mitogenomes, 13 protein-coding genes, and nine nuclear markers, though incomplete lineage sorting and low genetic diversity in some species (e.g., due to historical bottlenecks) necessitate caution in interpreting shallow nodes.[107][105]
Fossil Record and Evolutionary History
The fossil record of Pholidota is sparse, with most specimens comprising isolated osteological elements rather than complete skeletons, reflecting both rarity of preservation and specialized burrowing habits that limit fossilization. The earliest definitive pholidotans date to the middle Eocene of Europe, approximately 47–50 million years ago, exemplified by Eomanis waldi from the Messel Pitlagerstätte in Germany, which preserves evidence of keratinous scales and anteater-like dental reductions adapted for myrmecophagy.[108] Subsequent Oligo-Miocene fossils, such as Necromanis species from France and Spain (around 16–33 million years ago), further document early diversification in Eurasia, with traits like elongated snouts and reduced dentition indicating continuity with modern forms.[109]African pholidotan fossils emerge later, with the earliest records from the Miocene-Pliocene boundary, including a partial skeleton from Langebaanweg, South Africa, dated to about 5 million years ago, suggesting dispersal from Eurasia via the Arabian Peninsula during periods of climatic connectivity.[108] Pleistocene remains, such as a humerus of Smutsia olteniensis from Romania (1.9–2.2 million years ago) and trackways from South African aeolianites (90,000–140,000 years ago), represent late occurrences in both continents, but provide limited insight into genus-level transitions due to fragmentation.[110][111] No pre-Eocene pholidotans are known, underscoring the order's relatively recent origin within Placentalia compared to more basal eutherians.Phylogenetically, Pholidota forms a monophyletic clade within Laurasiatheria, with molecular clock estimates placing its divergence from Carnivora (its probable sister group in the informal Ferae assemblage) at 56.8–67.1 million years ago, shortly after the Cretaceous-Paleogene boundary.[1] This timeline aligns with a Eurasian cradle of evolution, where early pholidotans likely adapted to forested paleoenvironments amid post-extinction ecological vacancies, evolving epidermal scales from modified hair follicles via co-option of genes like EDAR and FGFR2, distinct from reptilian squamation.[1] Fossil evidence supports limited morphological stasis, with modern Manisspecies retaining Eocene-grade features, though genomic analyses reveal accelerated evolution in sensory and immune loci, potentially linked to solitary, insectivorous niches.[112] Debates persist on exact interordinal affinities due to conflicting morphological (e.g., xenarthran-like ankle traits) and molecular signals, but consensus favors a carnivoran alliance over outdated pilosean groupings.[113]
Ecological Role
Insect Population Control
Pangolins exert significant influence on insect populations through their specialized diet, which consists almost exclusively of ants and termites. These myrmecophagous and termitophagous mammals use their elongated, sticky tongues to extract insects from nests, consuming up to 20,000 individuals per day during active foraging periods.[114][14] Over an annual cycle, a single adult pangolin may ingest more than 70 million ants and termites, with diet composition varying by species and season but dominated by a few prevalent taxa.[69][53]This predation regulates ant and termite abundances in tropical and subtropical ecosystems, mitigating outbreaks that damage crops, timber, and soil structure. Pangolins preferentially target subterranean and arboreal colonies, disrupting mound-building activities and reducing biomass peaks, as observed in dietary analyses from regions like central Africa where termite consumption correlates with seasonal prey availability.[115][27][116] One estimate suggests an individual pangolin's foraging equates to safeguarding over 40 acres (16 hectares) from termite-induced degradation, underscoring their function as natural biocontrol agents in forests and savannas.[93]Ecological studies highlight pangolins' selective foraging, which focuses on pestiferous species like certain Anoplolepisants and mound-forming termites, thereby influencing community dynamics without broadly depleting beneficial decomposer roles.[115] In areas with declining pangolin numbers due to anthropogenic pressures, termite densities have shown localized increases, implying a measurable suppressive effect under normal population levels.[69] However, quantitative field experiments remain limited, with most evidence derived from scatanalysis and observational data rather than controlled exclusion trials.[116]
Interactions with Other Species
Pangolins primarily interact with other species through predation dynamics, where they serve as prey for various carnivores and reptiles. African species face threats from leopards (Panthera pardus), spotted hyenas (Crocuta crocuta), and lions (Panthera leo), which attempt to access the curled pangolin despite its armored defense.[8][117] These predators often abandon attacks due to the scales' toughness and the pangolin's ability to emit a foul-smelling secretion from anal glands, deterring further engagement.[18] Pythons and other large snakes may also prey on juveniles or smaller individuals, exploiting vulnerabilities during foraging.[8]Beyond predation, pangolins exhibit commensal relationships via their burrowing behavior, which benefits co-occurring vertebrates without reciprocal advantage to the pangolin. In Asian habitats, Chinese pangolins (Manis pentadactyla) create burrows that multiple species co-utilize, fostering spatially convergent interactions and altering local vertebrate assemblages toward greater diversity.[118] These structures act as refugia in disturbed environments, such as post-fire forests, accelerating multi-species coexistence and ecological restoration by providing shelter and potentially aiding soil aeration for invertebrates.[119][120]Interspecific competition occurs with other myrmecophagous mammals sharing ant and termite resources, influencing distribution patterns. African ground pangolins (Smutsia temminckii) overlap with aardvarks (Orycteropus afer), leading to resource partitioning or exclusion in high-density insectivore zones.[121] Such trophic overlaps can limit pangolin foraging efficiency, particularly in fragmented habitats where prey colonies are depleted by multiple consumers.[121] No evidence supports mutualistic symbiosis with prey insects, as pangolins function as strict predators in these chains.[115]![Pangolin defending itself from lions (Gir Forest, Gujarat, India)](./assets/Pangolin_defending_itself_from_lions_Gir_Forest%252C_Gujarat%252C_India
Human Interactions
Historical and Cultural Significance
The term "pangolin" derives from the Malay word pengguling, meaning "the one who rolls up," reflecting the animal's defensive behavior of curling into a ball.[122] This nomenclature was adopted in European descriptions following encounters in Southeast Asia, highlighting early observations of their unique morphology by traders and explorers.[122]Historically, pangolin scales have been utilized in the fabrication of protective armor, with a notable example being a seventeenth-century coat presented to the Prince of Wales (later King George IV) in 1820 by the East India Company. Such applications underscore the perceived durability of their keratinous scales, akin to overlapping plates, which inspired human adaptations for defense in regions where pangolins were accessible.In various African cultures, pangolins hold symbolic value as emblems of fertility and protection; for instance, among certain communities, they are invoked in rituals to aid infertile individuals, symbolizing the overcoming of reproductive challenges due to the animal's reproductive success despite its solitary nature.[123] In Zimbabwean traditions, pangolins are regarded as harbingers of good fortune, with beliefs prohibiting their harm to avoid misfortune, a taboo rooted in their rarity and enigmatic appearance.[124] Additionally, Temminck's ground pangolins (Smutsia temminckii) have been employed in sacrificial practices to forecast rainfall patterns, leveraging their burrowing habits as indicators of environmental cues.[125]In Chinese folklore, pangolins feature in legends depicting them as subterranean wanderers capable of global travel underground, a narrative that parallels their modern exploitation through international trafficking networks.[126] Across cultures, their armored form has positioned them as motifs of resilience, though these attributions stem from observational anecdotes rather than empirical validation of mystical properties.[127]
Traditional Medicine and Nutritional Uses
In traditional Chinese medicine (TCM), pangolin scales, known as Squama Manitis, have been used for centuries to purportedly promote lactation in women, reduce swelling, activate blood circulation, and treat conditions such as rheumatism and mammary gland blockages.[128] Practitioners prescribe scales to clear bodily "blockages" and relieve wind-dampness, often in powdered form or soaked in alcohol.[129] However, scientific reviews find no reliable evidence supporting these claimed medicinal values, attributing any perceived effects to placebo or unrelated factors rather than inherent properties of the keratin-based scales.[130] In 2025, China excluded pangolin-derived formulae from its pharmacopoeia, reflecting acknowledgment of the lack of proven therapeutic efficacy amid conservation pressures.[131]Across Africa, traditional healers utilize up to 22 pangolin body parts to address ailments categorized under 17 international disease classifications, with scales and bones most frequently prescribed for rheumatism, convulsions, and spiritual protection.[132] In Ghana, 13 parts are employed for various conditions, including financial rituals and treatment of convulsions, based on folk knowledge passed through generations.[133]Vietnamesefolkmedicine similarly employs scales for circulation stimulation and abscesstreatment, with practitioners viewing pangolins as substitutable by other species despite persistent demand.[134] These uses stem from cultural beliefs in the animal's mystical or curative properties, though empirical validation remains absent, and overharvesting has intensified scrutiny.[135]Pangolin meat serves as a nutritional and cultural resource, consumed as a protein source in rural Africa and as a delicacy in parts of Asia, where it is valued for purported kidney health benefits in China and Vietnam.[136] African species rank highly in palatability surveys, scoring nearly nine out of ten among available wild meats, driving local bushmeat trade over scale exports in some regions.[137] Some consumers attribute supplementary nutritional value to the meat, integrating it into diets for health enhancement, though specific compositional data confirming superior benefits over common proteins is unavailable.[138] Historical records indicate longstanding consumption across range countries for sustenance and status, predating modern trade dynamics.[139]
Legal and Illegal Trade Dynamics
All eight pangolin species have been listed under Appendix I of the Convention on International Trade in Endangered Species (CITES) since October 2017, prohibiting international commercial trade in wild specimens and requiring non-detriment findings for any export of captive-bred individuals, which remain negligible due to unsuccessful large-scale breeding efforts.[2][140] Many range states, including China and India, have enacted domestic bans on pangolin trade and possession, though enforcement varies and some stockpiled scales from pre-ban seizures are permitted for limited domestic use in traditional Chinese medicine under quotas, such as China's 2024 allocation of scales equivalent to pangolins poached decades ago.[141] Legal trade volumes are thus minimal, often confined to scientific or pre-Convention specimens, with no evidence of sustainable captive production meeting demand.[142]Illegal trade dominates pangolin commerce, driven primarily by Asian demand for scales in purported medicinal remedies and meat as a delicacy, with African populations increasingly targeted as Asian stocks deplete. Global seizures from 2015 to 2024 totaled over 370 metric tons of scales, conservatively estimated to derive from 655,000 to 1.1 million pangolins, though actual poaching likely exceeds this due to undetected shipments.[143]Trade networks span Africa—key suppliers like Nigeria and Cameroon—to Asian consumers, utilizing maritime containers disguised as legal goods, with post-2020 pandemic disruptions causing a temporary slump that has partially persisted but not eradicated flows.[144] In China, court-documented smuggling cases peaked in 2018 before declining amid stricter border controls, yet persistent domestic markets and online sales indicate ongoing circumvention of bans.[145]Enforcement dynamics reveal systemic challenges: low prosecution rates in source countries, corruption in transit hubs, and weak demand-side penalties sustain profitability, with scales fetching up to $500 per kilogram despite bans. While seizures highlight operational successes—such as multi-ton hauls in 2023—underreporting and data gaps in CITES trade records hinder precise volume assessments, underscoring that legal prohibitions have curbed but not halted the trade's scale relative to pre-2017 levels.[146] Population impacts from this illicit harvest remain acute, as pangolins' low reproductive rates preclude recovery from annual losses in the hundreds of thousands.[147]
Threats
Habitat Loss and Fragmentation
Habitat loss for pangolins arises primarily from deforestation associated with agricultural expansion, commercial logging, mining operations, and infrastructure development across their ranges in sub-Saharan Africa and Asia. In Southeast Asia, palm oil production has driven extensive forest conversion, contributing to some of the world's highest deforestation rates, with suitable pangolin habitats diminishing rapidly due to these activities.[148] In Central Africa, habitat degradation stems from agricultural encroachment, mining, and infrastructural projects, such as those in Uganda's Murchison Falls area, which directly erode forested and savanna environments critical for pangolin foraging and burrowing.[149]Fragmentation exacerbates these losses by dividing contiguous habitats into isolated patches, hindering dispersal for these solitary mammals that require large home ranges—often spanning several square kilometers—for locating ant and termite colonies. This isolation reduces genetic diversity, elevates inbreeding risks, and heightens vulnerability to stochastic events in small remnant populations, as observed in modeling of white-bellied and giant pangolin extirpations linked to habitat reduction over the past two decades.[150] For the Chinese pangolin, fragmentation combined with low population densities further threatens persistence by limiting movement and increasing exposure to human disturbances.[151] Pangolins' sensitivity to such changes compounds poaching pressures, as fragmented edges bring individuals into closer proximity with human settlements and roads, facilitating incidental encounters and harvest.[152]Empirical studies indicate that anthropogenic habitat alterations, including deforestation, have driven occupancy declines; for instance, higher human development indices correlate with reduced Chinese pangolin presence in potential habitats.[153] In mainland China, widespread fragmentation from urban and agricultural development has contributed to local extinctions alongside exploitation.[154] While precise quantification of habitat loss attributable solely to fragmentation remains challenging due to overlapping threats, the U.S. Fish and Wildlife Service notes pangolins' particular intolerance to human-induced disturbances, positioning habitat integrity as a core factor in their vulnerability across all eight species.[152]Conservation models underscore that without addressing these dynamics, even protected areas may fail to sustain viable populations amid ongoing land-use pressures.[155]
Poaching Pressures and Population Impacts
Poaching targets pangolins primarily for their keratin scales, used in traditional Chinese medicine for purported remedies against ailments like arthritis and cancer despite lacking scientific evidence, and for their meat, valued as a delicacy in parts of Asia including China and Vietnam.[156] Demand from these markets drives the illegal trade, with African species increasingly exploited as Asian populations dwindle.[145] Annual poaching estimates for African pangolins range from 400,000 to 2.7 million individuals, though actual figures likely exceed seizure data, which represent only a fraction of the trade.[157]Seizures of pangolin scales and products underscore the scale of poaching pressures; between 2016 and 2024, global incidents involved an estimated half a million pangolins across 75 countries and 178 trade routes.[158] Notable examples include over 9.4 tonnes of stockpiled scales seized in Nigeria in October 2024, the largest such confiscation globally since January 2020, and a post-2018 peak decline in Chinese seizures reflecting partial enforcement gains but persistent smuggling.[159][145] In Nigeria, approximately 98% of poached pangolins are initially harvested for meat, with scales often a secondary product, highlighting regional consumption patterns exacerbating supply chain dynamics.[160]Population impacts from poaching are severe, with all eight pangolin species classified by the IUCN as threatened and undergoing ongoing declines, three as critically endangered.[161] Over the past decade, more than one million pangolins have been trafficked, contributing to documented reductions such as an 80% drop in the Philippine pangolinpopulation over 21 years and 50% declines in white-bellied and giant ground pangolins.[162][163] In mainland China, overexploitation has led to local extinctions across most habitats, shifting pressure to African sources.[154] These losses compound genetic bottlenecks and reduced reproductive viability, as pangolins' solitary, nocturnal habits hinder accurate population censuses and recovery monitoring.[164] Despite international trade bans since 2017, poaching persists, with one pangolin estimated poached every three minutes as of 2019 data, underscoring enforcement gaps in source countries.[156]
Natural vs. Anthropogenic Risks
Pangolins face predation from large carnivores such as lions, leopards, hyenas, and pythons, which target them despite their keratin scales and defensive curling behavior.[165][166] These natural predators exploit pangolins primarily during vulnerable periods, like when juveniles are less armored or adults are foraging nocturnally, but successful attacks remain infrequent due to the animal's armor, which resists penetration by most claws and teeth.[167] Limited empirical data on wild mortality rates indicate that predation contributes to baseline population turnover, yet historical coexistence suggests it does not drive net declines in undisturbed habitats.[168]Other natural risks include parasites, such as ticks on scales, and sporadic viral infections, though documented cases in free-ranging pangolins are rare and often tied to environmental stressors rather than epizootics.[169] In wild Taiwanese pangolins, trauma accounts for a significant portion of observed morbidity, potentially from intraspecific conflicts, falls, or predator encounters, but precise attribution to purely natural causes versus incidental human influences remains challenging without necropsy data.[170]Anthropogenic risks, conversely, impose outsized pressures through direct poaching for scales and meat, which has fueled population collapses across Asian and African species, with trade volumes exceeding millions of individuals annually in peak years like 2010-2015.[171]Habitat fragmentation from logging and agriculture reduces foraging grounds, exacerbating vulnerability to both predators and hunters, while incidental deaths from electric fences and roads compound losses—e.g., shocking levels of electrocutions reported in southern African ground pangolins.[172] Genomic and demographic analyses confirm recent anthropogenic-driven bottlenecks, with effective population sizes plummeting post-1950 due to overexploitation rather than climatic or predatory shifts.[164]Empirical evidence underscores that anthropogenic factors dominate pangolin threats, as all eight species are now listed as vulnerable to critically endangered by the IUCN, with declines of 50-80% in trafficked regions unattributable to natural predation alone, which ecosystems historically buffered through reproductive rates of one offspring per year.[173] In contrast, natural risks persist at sustainable levels in protected areas devoid of human interference, highlighting causal primacy of human activities in current extirpations.[174]
Conservation Efforts
International Agreements and Listings
All eight species of pangolin (Manis spp.) were transferred from Appendix II to Appendix I of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) at the 17th Conference of the Parties (CoP17) held in Johannesburg, South Africa, from September 24 to October 5, 2016.[175] This uplisting, which entered into force on January 2, 2017, prohibits international commercial trade in pangolins and their parts, aiming to curb the primary threat of poaching driven by demand for scales and meat in traditional medicine and cuisine.[140] Prior to this, the species were regulated under Appendix II, which permitted trade with export quotas and documentation but proved insufficient to stem escalating trafficking volumes documented in seizure data from 2000–2015.[176]The CITES Appendix I designation requires range states to implement stricter domestic measures, including bans on exports and enhanced enforcement against illegal trade routes primarily linking Africa to Asia.[177] However, compliance varies, with reports indicating continued large-scale seizures post-2017, such as over 100 tonnes of scales annually in some years, underscoring gaps in implementation despite the agreement's legal framework ratified by 184 parties.[178] No other major multilateral environmental agreements, such as the Convention on Migratory Species (CMS), specifically list or protect pangolins, as their primarily terrestrial, non-migratory habits fall outside CMS scope.[179]On the International Union for Conservation of Nature (IUCN) Red List of Threatened Species, all eight pangolin species are classified as threatened, with four (Chinese, Sunda, Philippine, and tree pangolins) as Critically Endangered, two (giant and Indian) as Endangered, and two African species (white-bellied and black-bellied) as Vulnerable, reflecting population declines of 50–80% over three generations due to overexploitation.[161] These assessments, updated as recently as 2019, inform CITES decisions but lack binding enforcement mechanisms, relying instead on voluntary national actions.[180]
National and Local Initiatives
In China, pangolins received national first-class protected status under wildlife laws on June 3, 2020, prohibiting commercial trade and imposing severe penalties for violations, though enforcement challenges persist amid ongoing domestic demand for scales in traditional medicine.[181] In January 2025, authorities announced an annual quota of 1 metric ton of pangolin scales for medicinal use, prompting criticism from conservation groups for potentially legitimizing sourcing that could fuel illegal imports despite international bans.[141] India's Wildlife Protection Act of 1972 lists the Indian pangolin (Manis crassicaudata) under Schedule I, affording it the highest level of legal protection against hunting and trade, with recent national efforts including radio-collaring for population monitoring and deployment of detection dogs in collaboration with state forest departments since 2022.[182] In Nigeria, the Endangered Species Act aligns with CITES to ban pangolin exploitation, supported by government actions such as the destruction of over 4 tonnes of seized pangolin scales and skins on October 16, 2023, as part of broader anti-trafficking measures.[183]Local initiatives in Africa emphasize rehabilitation and community involvement. In South Africa, the African Pangolin Working Group, established as a non-profit, coordinates species-specific research, rescue operations, and public education across the continent's four pangolin species, including partnerships for habitat protection and anti-poaching training.[184] Pangolin.Africa, based in the country, operates rehabilitation centers prioritizing swift release of rescued individuals into natural habitats while engaging local communities in monitoring and awareness programs to reduce poaching incentives.[185] In Kenya, The Pangolin Project focuses on the Nyekweri Forest ecosystem, implementing community-driven patrols and nature-based financing to safeguard giant pangolins (Smutsia gigantea) across 25,000 acres, with efforts intensified since 2020 to counter habitat encroachment.[186] Nigeria's Pangolin Conservation Guild undertakes site-specific research and awareness campaigns in high-trafficking regions, collaborating with locals for rescues, such as the 2024 rehabilitation and release of white-bellied pangolins (Phataginus tricuspis) in Oyo State.[187][188]In Uganda, the Pangolin Conservation Project, launched with the Uganda Wildlife Authority, represents the country's first dedicated effort, funding patrols and capacity-building in key ranges to address poaching hotspots.[189] These grassroots programs often integrate economic alternatives for communities, such as ecotourism tracking safaris in South Africa's Kalahari region, where participants contribute to data collection on Temminck's ground pangolins (Smutsia temminckii).[190] Despite such targeted actions, data from seizures indicate that local enforcement gaps allow trafficking networks to persist, underscoring the need for sustained funding and inter-agency coordination.[191]
Effectiveness and Data Gaps
Despite the uplisting of all eight pangolin species to CITES Appendix I in 2017, which prohibits commercial international trade, illegal trafficking persists at levels insufficient to halt population declines, with the Pangolin Specialist Group reporting in September 2025 that species remain at high extinction risk due to overexploitation and habitat issues.[192][161] Seizure data from Indonesia indicate a reduction in detected pangolin equivalents from 3,000–4,000 annually in 2011–2012 to 400–600 in 2021–2022, suggesting partial deterrence from enhanced protections, though underreporting or shifts to undetected routes may confound assessments.[193] National initiatives, such as China's legal and habitat improvements reported to CITES in 2023, have strengthened enforcement in some areas, yet weak regional coordination and domestic demand sustain poaching pressures.[194][175] Local efforts like Operation Pangolin, launched in 2023, aim to bolster anti-trafficking and sustainable management but lack long-term outcome metrics as of 2025.[195]Evaluating overall effectiveness is hindered by inconsistent enforcement and limited community engagement, with studies in India identifying these as primary barriers to reducing anthropogenic risks.[196] While CITES resolutions since 2017 advocate increased funding and political commitment, implementation varies, contributing to ongoing extirpations in surveyed African populations over the past two decades.[197][150] China's 2025 quota of 1 metric ton of pangolin scales for traditional medicine, purportedly from captive sources, has raised concerns over verification and potential laundering of wild specimens, underscoring gaps in supply chain oversight.[141]Critical data gaps exacerbate these challenges, including unreliable population estimates due to pangolins' elusive, nocturnal habits and low densities, which render camera traps and line transects ineffective for monitoring.[198][199] Reporting inconsistencies across range states, with 15 African countries lacking any pangolin-specific literature, impede trend analysis, as noted in IUCN assessments from August 2025.[2][200] Genetic studies reveal low diversity from historical declines, but baseline demographic data pre- and post-2017 protections remain sparse, complicating attribution of changes to conservation actions versus natural variability.[152] Targeted research on monitoring protocols is ongoing, yet opportunistic surveys dominate, yielding biased or incomplete insights into habitat-specific trends.[199]
Recent Developments
Trade Seizure Trends Post-2020
Global seizures of pangolin scales and other products declined markedly after the 2019 peak of nearly 100 metric tons, dropping to approximately 20 metric tons in 2020 amid COVID-19-related border closures and logistical disruptions that hindered transnational smuggling networks.[144] This post-pandemic reduction persisted through 2024, with large-scale seizures in that year registering 84% below 2019 levels, reflecting sustained lower volumes rather than merely improved concealment by traffickers.[144][143] Analyses attribute the trend partly to pandemic-induced supply chain interruptions in source countries like Nigeria and transit hubs in Asia, alongside incremental gains in enforcement coordination, though seizure data inherently underestimates total illicit volumes due to undetected shipments.[201]From 2015 to 2024, authorities documented seizures totaling about 181 metric tons of pangolin scales globally, with the post-2020 period accounting for a disproportionately smaller share compared to the pre-pandemic surge driven by demand in China and Vietnam.[201]CITES-monitored incidents from 2016 to 2024 encompassed 2,222 seizures equivalent to roughly 553,042 whole pangolins, but annual breakdowns indicate a tapering after 2020, with fewer high-volume interceptions in key routes from Africa to East Asia.[202] In the United States, for instance, pangolin specimen seizures from 2017 to 2023 numbered in the dozens, primarily scales originating from African species, underscoring persistent but diminished inflows to consumer markets.[203]Regional patterns reinforce the global downturn: African export seizures, which dominated pre-2020 trade, fell alongside reduced detections in Asian ports, while isolated upticks—such as heightened reporting in Nepal across nearly a third of districts—highlight localized persistence amid broader contraction.[204] Enforcement bodies like the Wildlife Justice Commission note that while the slump signals disrupted networks, adaptive strategies by organized crime groups could mask ongoing poaching pressures, necessitating expanded monitoring beyond seizures to gauge true trade dynamics.[201] Into 2025, preliminary data suggest no rebound, with international reports emphasizing the role of fortified supply controls in source nations over demand-side interventions.[144]
Policy Updates and Research Advances
![Destruction of confiscated pangolin scales in Cameroon by USFWS][float-right] In June 2025, the United States Fish and Wildlife Service proposed listing all seven Asian and African pangolin species as endangered under the Endangered Species Act, which would impose stricter domestic trade and import restrictions to combat ongoing trafficking.[152] This move builds on CITES Appendix I protections since 2017 but addresses persistent illegal trade documented in seizure data.[205] In December 2024, China established a national pangolin conservation expert committee to develop global strategies, amid vows to reduce medicinal use of scales.[194] However, China's January 2025 announcement of a 1-metric-ton annual quota for pangolin scales in traditional Chinese medicine has drawn criticism from conservationists, who argue it undermines trade bans despite promises of gradual phase-out.[141]Research efforts have advanced monitoring techniques, with a June 2025 study using GPS collars and accelerometers on five released Chinese pangolins revealing nocturnal activity peaks and home ranges averaging 12.5 square kilometers, informing reintroduction protocols.[60] Genetic analyses in January 2025 proposed a new species, Manis indoburmanica, diverging from the Chinese pangolin around 3.4 million years ago, based on mitochondrial DNA from Indian specimens, highlighting taxonomic complexities in conservation planning.[206] An April 2025 application of artificial intelligence developed a detection model achieving 95% accuracy on pangolin images from camera traps, enabling scalable anti-poachingsurveillance in remote habitats.[207] The IUCN Species Survival Commission Pangolin Specialist Group’s 2024-2025 report synthesizes data showing low genetic diversity across species due to overexploitation, emphasizing the need for enhanced population surveys to fill reporting gaps identified in August 2025 assessments.[208][2]
Ongoing Challenges in 2025
In 2025, illegal trade remains a primary threat to all eight pangolin species, with seizures of scales and live specimens continuing despite CITES Appendix I listings prohibiting commercial trade. Operations in Nigeria, such as Operation Willow in March and Operation Orange in July, resulted in arrests of traffickers and confiscations of pangolin scales, underscoring persistent smuggling networks from Africa to Asia.[209][210] A CITES-IUCN report highlighted that between 2016 and 2024, seizures involved over 100 metric tons of scales, equivalent to approximately 200,000 pangolins, though underreporting likely underestimates the scale.[2]Habitat loss and fragmentation exacerbate poaching pressures, as deforestation for agriculture and logging reduces available ant and termite habitats across pangolin ranges in Asia and Africa. The U.S. Fish and Wildlife Service's June 2025 proposal to list seven pangolin species as endangered under the Endangered Species Act cited ongoing habitatdegradation as a key factor contributing to projected population declines exceeding 50% in three generations for most species.[152][205]Critical data gaps persist, with no comprehensive population surveys updated since pre-2020 assessments, impeding precise threat evaluation and conservation prioritization. The IUCN SSC Pangolin Specialist Group's September 2025 report emphasized that without improved monitoring and enforcement, overexploitation will continue driving species toward extinction, as current efforts fail to curb demand in consumer markets like China and Vietnam.[192][208] Enforcement challenges, including corruption and limited resources in source countries, further hinder progress, as evidenced by ongoing detections of African pangolin derivatives in Asian seizures.[144]