Tree Pangolins of West Africa: Life in the Canopy
Deep in the rainforests of West and Central Africa, two small, secretive pangolin species spend their lives among the branches. Unlike their ground-dwelling cousins on the savannas, the tree pangolins of this region have evolved for an arboreal existence — clinging to bark, raiding ant columns on vertical trunks, and sleeping curled inside hollow trees high above the forest floor. Understanding these animals is essential for conserving them, yet tree pangolins remain among the least studied mammals on Earth.
Two Species, One Forest
West Africa is home to two distinct tree-dwelling pangolin species, each occupying a slightly different ecological niche within overlapping ranges.
The White-Bellied Pangolin
The white-bellied pangolin (Phataginus tricuspis) is the most widely distributed pangolin species in Africa and one of the most frequently encountered pangolins anywhere in the world — though "frequently" is relative for a nocturnal animal that excels at concealment. It ranges from Senegal in the west across the Congo Basin to East Africa, occupying lowland rainforest, secondary forest, and forest-savanna mosaic habitats.
Adults typically weigh between 1.2 and 2.4 kilograms, making them considerably smaller than the ground pangolin of southern Africa. Their scales are tricuspidate — meaning each scale has three points at the tip — which gives the species its scientific name and provides a reliable field identification feature for researchers. The underside of the body is covered in pale, soft skin with sparse hair rather than scales.
The white-bellied pangolin's prehensile tail is one of its most distinctive features, especially in juveniles. Young animals can hang suspended from branches using the tail alone, which allows them to forage on vertical surfaces with remarkable freedom. In adults, the tail retains its grasping ability but is used more for anchoring than full suspension.
The Black-Bellied Pangolin
The black-bellied pangolin (Phataginus tetradactyla) is smaller, rarer, and less understood. Its range overlaps substantially with the white-bellied pangolin across West and Central Africa but tends toward more riverine environments — it is a capable swimmer and is often found near water. The dark skin on its underside provides the common name, and it can be distinguished from P. tricuspis by having fewer scale rows and a proportionally longer tail.
Weighing between 1.5 and 2.5 kilograms, it occupies a similar size range but its preference for swampy forest margins makes field encounters rare. Virtually all published research on African tree pangolins has focused on the white-bellied species; the black-bellied pangolin remains a significant knowledge gap in pangolin biology.
Adaptations for Arboreal Life
Tree pangolins have evolved a suite of physical adaptations that set them apart from ground-dwelling pangolins such as the Temminck's ground pangolin or the Chinese pangolin.
Claws and Grip
The forefeet of tree pangolins bear three large, curved claws that function as hooks for gripping bark. When climbing, a pangolin moves with a slow, deliberate gait — testing each foothold before committing weight. The overlapping scales that cover the body also serve a structural role during climbing: as the animal curves around a branch, the lower edges of the scales dig slightly into bark, adding friction.
The Prehensile Tail
Among the four African pangolin species, the tree pangolins are the only ones with truly prehensile tails. The tail can wrap around branches and support the animal's full body weight, allowing it to reach insect colonies that are otherwise inaccessible. When threatened, a tree pangolin curls into a tight ball — scales outward — and may anchor itself to a branch with the tail, making it extremely difficult for a predator to dislodge.
Tongue and Feeding
Like all pangolins, tree pangolins have no teeth. They rely on an extraordinarily long, sticky tongue — longer than their entire body when fully extended — to extract ants and termites from colonies. The tongue is anchored not in the mouth but at the base of the sternum, allowing for remarkable reach. Tree pangolins target arboreal ant species as a primary food source, locating nests by scent and tearing into them with their powerful claws before deploying the tongue rapidly.
Eyes and Senses
Tree pangolins are nocturnal and have small eyes with limited colour vision. They navigate and locate food primarily through an acute sense of smell. The nostrils can be sealed during foraging to prevent ant and termite soldiers from entering, and the eyelids are thick and tough enough to resist insect bites.
Behaviour and Reproduction
Tree pangolins are solitary outside of mating periods. Home ranges of male white-bellied pangolins in studied populations have been measured at between 10 and 30 hectares, with males' ranges overlapping those of several females. Communication occurs through scent marking — pangolins have well-developed anal scent glands and mark territories on tree trunks and branches.
Reproduction is slow by small-mammal standards. Females give birth to a single offspring after a gestation of approximately 140 days. The pup is born with soft, flexible scales that harden within days. For the first weeks of life, the young animal rides on the base of the mother's tail as she moves through the canopy, learning foraging routes and insect-colony locations. Weaning occurs at around three months, but juveniles may remain in the mother's home range for several months beyond that.
A white-bellied pangolin pup riding on its mother's tail is one of the rarest sights in African wildlife. The mother will curl protectively around the pup when threatened, and the pup instinctively mimics the curling behaviour within weeks of birth.
Conservation Status and Threats
Both tree pangolin species of West Africa are listed as Vulnerable on the IUCN Red List, with populations declining due to multiple intersecting pressures.
Bushmeat Hunting
In West and Central Africa, pangolins are hunted for bushmeat at a significant scale. Unlike the Asian pangolin trade, which is largely commercial and export-driven, the bushmeat trade in Africa involves large numbers of people hunting for local consumption and sale in urban markets. White-bellied pangolins are regularly found in bushmeat markets across Nigeria, Cameroon, Ghana, and the Democratic Republic of Congo.
International Trade
All pangolin species were moved to CITES Appendix I in 2016, prohibiting all commercial international trade. Despite this, African pangolins — primarily the white-bellied species due to its relative abundance — have increasingly been targeted for export to Asian markets as Asian pangolin populations have collapsed. Large-scale seizures of frozen pangolins and scales originating in West Africa have been documented repeatedly since 2017.
Habitat Loss
Deforestation across West Africa for agriculture, logging, and infrastructure continues to reduce the forest habitat that tree pangolins depend on. Unlike ground-dwelling species that can persist in degraded savanna environments, tree pangolins require intact or near-intact forest canopy.
Research and Conservation Efforts
Field research on West African tree pangolins has accelerated in recent years, driven by organisations including the African Pangolin Working Group, the IUCN SSC Pangolin Specialist Group, and several in-country NGOs. Radio-tracking studies in Nigeria and Cameroon have produced the first detailed data on home range size, habitat selection, and activity patterns for wild white-bellied pangolins.
Community-based conservation approaches — working with local hunters, engaging traditional leaders, and providing alternative livelihoods — have shown promise in reducing hunting pressure in pilot areas. However, scaling these approaches across the vast range of West and Central Africa requires sustained funding and political will that has so far been inconsistent.
Captive breeding of tree pangolins has proved exceptionally difficult. Their specialised dietary needs, stress sensitivity, and susceptibility to disease in captivity mean that most individuals rescued from the trade do not survive long-term. A handful of institutions have achieved short-term survival and feeding of white-bellied pangolins, but breeding in captivity remains unachieved for this species.
Why Tree Pangolins Matter
Tree pangolins are significant seed dispersers and insect controllers in the ecosystems they inhabit. A single pangolin can consume tens of thousands of ants and termites per night, helping to regulate insect populations that, left unchecked, can damage trees and soil structure. The loss of pangolins from a forest ecosystem creates cascading effects that are difficult to reverse.
They also matter as indicators of forest health. The presence of tree pangolins in a forest suggests sufficient prey density, adequate cover, and limited hunting pressure — conditions that benefit many other species sharing the same habitat.
For the conservation community, tree pangolins of West Africa represent a test case: can charismatic but difficult-to-study nocturnal mammals be protected in regions with high poverty, strong bushmeat traditions, and weak governance? The answer to that question will define whether these remarkable canopy climbers remain part of Africa's forests or become another casualty of the global wildlife trade.