Pangolin

Pangolins, sometimes known as scaly anteaters, are mammals of the order Pholidota. The one extant family, the Manidae, has three genera: Manis, Phataginus, and Smutsia. Manis comprises four species found in Asia, while Phataginus and Smutsia include two species each, all found in sub-Saharan Africa. These species range in size from 30 to 100 cm. Several extinct pangolin species are also known. In September 2023, nine species were reported.

Pangolins are predominantly nocturnal and solitary, with individuals occupying overlapping but largely exclusive territories. They are highly fossorial or arboreal depending on species, using their strong forelimbs to dig extensive burrows or climb trees. Foraging is primarily conducted at night, guided by olfaction to locate ant and termite colonies. Pangolins use their claws to break open nests and rapidly flick their long, sticky tongues in and out to capture prey, consuming up to 200,000 insects in a single night. They exhibit defensive behaviors such as rolling into a tight ball, tucking their head under the tail, and emitting foul-smelling secretions from anal glands when threatened. Social interactions are minimal outside of mating and maternal care, and individuals communicate through scent marking and occasional vocalizations such as hissing or puffing. Daily routines involve alternating periods of rest in secure shelters and active foraging, with activity peaks shortly after dusk and before dawn.

Pangolin reproduction is characterized by low fecundity. Mating typically occurs during specific breeding seasons, which vary by region but often coincide with the onset of the rainy season. Courtship involves scent marking and following by the male. After mating, gestation lasts between 65 and 140 days depending on species. Most pangolins give birth to a single, well-developed offspring, though twins are rare. The neonate is born with soft, white scales that harden within days. The mother nurses the young in a burrow or tree hollow, and the juvenile rides on her back or tail during foraging trips. Weaning occurs at 2–3 months, but the young may remain with the mother for up to six months. Sexual maturity is reached at 2–3 years. Parental care is exclusively maternal, and males do not participate in rearing.

Pangolins exhibit a suite of specialized adaptations for myrmecophagy (ant and termite eating). Their robust, recurved claws enable them to break into hard insect nests, while their elongated, highly protrusible tongues—supported by an extended xiphisternum—allow deep probing into tunnels. The absence of teeth is compensated by a gizzard-like stomach lined with keratinous spines that grinds prey, often aided by ingested sand or small stones. Their scales, composed of tough keratin, provide nearly impenetrable armor against predators such as big cats. Pangolins can close their ears and nostrils to keep out insects and debris while feeding. Behavioral adaptations include nocturnality to avoid diurnal predators and heat stress, and secretive, solitary habits to minimize detection. Arboreal species possess prehensile tails for climbing, while terrestrial species have powerful limbs for digging.

Pangolins hold diverse roles in human culture. In parts of Africa and Asia, their scales are used in traditional medicine, amulets, and rituals, believed to cure ailments or bring good fortune, despite lack of scientific evidence. Their meat is consumed as a status symbol in some regions. In folklore, pangolins are sometimes seen as symbols of tenacity and protection. Increasingly, they have become icons for wildlife conservation, with international campaigns highlighting their plight and ecological importance.

Recent research has focused on pangolin genomics, revealing unique immune system adaptations and insights into keratin scale formation. Studies have clarified phylogenetic relationships, confirming pangolins as a distinct lineage with no close relatives among living mammals. Conservation biology research has improved understanding of pangolin ecology, home range sizes, and reproductive biology, informing anti-poaching strategies. Notably, pangolins were investigated as potential intermediate hosts for coronaviruses, but current evidence does not support a direct link to SARS-CoV-2. Ongoing studies aim to develop effective captive husbandry protocols and to map trafficking networks using genetic forensics.

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The Pangolin is currently classified as Critically Endangered on the IUCN Red List.

Pangolins are among the most trafficked mammals globally, facing severe threats from illegal hunting for their scales, which are erroneously believed to have medicinal properties, and for their meat, considered a delicacy in some cultures. Habitat loss due to deforestation and agricultural expansion further exacerbates population declines. All eight recognized species are listed as threatened, with several classified as Critically Endangered by the IUCN. Population trends are declining, with some local extinctions reported. Conservation challenges include limited ecological data, difficulties in captive breeding due to specialized diets and stress sensitivity, and persistent demand in black markets. Enforcement of international trade bans (CITES Appendix I) is ongoing but hampered by insufficient resources and corruption.