Ground pangolins walk bipedally with forelimbs raised. Tree pangolins grip branches with prehensile tails. All species can swim. The anatomy explains why.
Pangolins are among the most morphologically distinctive mammals alive. Every element of their body plan is shaped by their dual imperatives: excavating insect nests with extraordinary force, and surviving encounters with large predators through passive armoured defence. Their locomotion is as unusual as their overlapping keratin scales. Ground-dwelling species regularly walk on their hindlimbs with forelimbs tucked and raised. Tree-dwelling species navigate the canopy using acutely curved claws and a muscular prehensile tail. All eight species are capable and willing swimmers. Understanding how pangolins move requires understanding the anatomical specialisations that make each mode of movement both possible and necessary.
Temminck's ground pangolin (Smutsia temminckii), found across sub-Saharan Africa from East to Southern Africa, and the giant ground pangolin (Smutsia gigantea), the largest of all pangolin species, both commonly walk in a bipedal posture during overland movement. In this gait, the animal raises its forelimbs off the ground, curling them inward against the body, and walks exclusively on its hindlimbs. The tail is carried low, either dragging lightly or serving as a dynamic counterbalance that adjusts to changes in terrain.
This posture is not a trick or an occasional behaviour — it is the routine locomotion pattern for open-ground travel in these species. The reason is purely functional: the forefeet carry enormous, curved digging claws that would be worn down rapidly by contact with the ground during walking. By tucking the forelimbs, the animal protects its primary excavation tools from abrasion. The trade-off is a gait that looks ungainly to human observers but is in practice highly effective at covering ground on the rocky, scrubby terrain of savanna and dry woodland.
Walking speed during normal foraging movement is typically between 1.5 and 3 kilometres per hour. When alarmed, a ground pangolin can move faster for short periods, reaching perhaps 5 kilometres per hour, though sustained speed is not the animal's strategy. Pangolins do not outrun predators; they roll into an armoured ball and wait. The locomotion system is optimised for foraging efficiency and tool preservation, not escape.
The forelimbs of ground pangolins are among the most powerful digging appendages in proportion to body size of any mammal. The limb carries five digits. Digits 2, 3, and 4 — the index, middle, and ring fingers — bear the large, curved, laterally compressed claws that do the bulk of excavation work. In the giant ground pangolin, these primary claws can reach 8 to 10 centimetres in length. Digit 1 (the thumb) and digit 5 (the little finger) have considerably smaller, shorter claws and play a secondary role in gripping during digging.
The musculature of the pangolin forelimb is massively developed relative to body size. The muscles responsible for flexion and extension of the elbow and wrist, and for the powerful retraction stroke of the primary claws through substrate, are disproportionately large. A key anatomical feature is the elongated olecranon process — the bony projection at the back of the elbow that forms the point of the elbow joint. An extended olecranon acts as a lever arm, giving the triceps muscle a longer moment arm and thus greater mechanical advantage for the powerful downward pull used when raking through a concrete-hard termite mound. The same principle applies in other powerful digging mammals such as aardvarks and badgers, but pangolins show an extreme version of this adaptation.
While the forefeet are specialised excavation tools held aloft during walking, the hind feet are the primary ground-contact surfaces for a bipedally walking pangolin, and their anatomy reflects this load-bearing function. The hind feet are plantigrade — the full sole of the foot contacts the ground, from heel to toe — which distributes body weight across a broad surface area and provides a stable platform for balanced bipedal movement.
The hind foot carries five digits with shorter, less dramatically curved claws than the forefeet. The heel pad is broad and well-cushioned. The ankle joint (the talocrural joint between the tibia and the talus bone) exhibits significant rotational mobility, allowing the foot to pronate inward during the defensive posture when the pangolin rolls into a ball. This rotation is what enables the hind feet to tuck neatly into the rolled-ball configuration, where the animal presents only its overlapping scale surfaces to the outside world.
During bipedal walking on uneven terrain, the spread of the hind toes provides a gripping surface that stabilises the gait. Pangolins navigate rocky hillsides, erosion gullies, and scrub vegetation with apparent ease, the broad plantigrade hind foot adapting naturally to substrate irregularities that would challenge a more digitigrade (toe-walking) mammal of similar size.
Four of the eight pangolin species are arboreal or semi-arboreal in their habits, and these species show a distinct suite of morphological adaptations. The black-bellied pangolin (Phataginus tetradactyla) of Central and West African lowland forests is the most committed canopy-dweller of all pangolins, spending the large majority of its life in trees and descending to the ground only rarely. The white-bellied or tree pangolin (Phataginus tricuspis), also of African forests, is semi-arboreal, splitting time between trees and ground foraging. The Sunda pangolin (Manis javanica) of Southeast Asia and the Philippine pangolin (Manis culionensis) are considered primarily terrestrial but regularly climb trees and are capable of significant arboreal movement.
All four of these species possess a prehensile tail that the purely terrestrial African species lack or have in reduced form. In the black-bellied pangolin, the prehensile tail is long, muscular, and serves as a fifth limb, gripping branches while the animal moves its body to a new position. This tail grip allows the pangolin to hang inverted beneath a branch while excavating an arboreal ant or termite nest above it, a feeding posture impossible for the terrestrial species.
The forelimb claws of arboreal pangolins are curved more acutely than those of ground species, forming a hook shape better suited to gripping curved branch surfaces than to raking through flat soil or mound walls. Body mass is generally lower in the arboreal species — the black-bellied pangolin typically weighs 2 to 3.5 kilograms versus the 15 to 35 kilograms of Temminck's or giant ground pangolins — which reduces the force demands on grip structures and allows more agile movement through the canopy.
All pangolin species are capable swimmers, and field observations across multiple species and continents have confirmed that water crossing is a routine rather than exceptional behaviour. Ground pangolins in the African savanna regularly cross rivers and streams that lie within their home ranges, particularly during wet seasons when water bodies are at their most extensive. Asian species including the Sunda pangolin have been observed swimming across rivers and channels between forest patches.
The mechanism of buoyancy in swimming pangolins is particularly elegant. The overlapping scales that cover the dorsal and lateral surfaces of the body trap a layer of air beneath them when the animal enters water. This air layer provides significant positive buoyancy without any physiological adjustment by the animal. Pangolins are naturally buoyant and do not have to work to stay afloat; their swimming effort is directed entirely toward propulsion and directional control.
In the water, pangolins swim with a sinuous lateral body movement, the hindlimbs paddling alternately while the forelimbs remain tucked in the characteristic resting position against the body. The tail trails behind, providing some directional stability. This swimming style is efficient enough that pangolins can cross water bodies of several hundred metres without apparent difficulty. There is no evidence that any pangolin species intentionally forages in aquatic environments; water crossing is a traversal behaviour rather than a feeding strategy.
Pangolin tracks are among the most recognisable of any African or Asian terrestrial mammal, once a tracker knows what to look for. The front track is unusual: three large, widely-spaced curved claw impressions with a comparatively narrow hand pad behind them reflect the three primary digging digits and the reduced overall width of the tucked forepaw. The hind track is broader, showing five smaller claw impressions arrayed in front of a substantial plantigrade foot pad.
A pangolin walking trail is dominated by hind-foot prints, sometimes appearing almost like a small bipedal dinosaur trail to an unfamiliar observer. Where the animal momentarily lowered its forelimbs — during pauses, direction changes, or when investigating a scent — front claw drag marks or partial front prints appear. In soft substrates such as river sand, mud, or dusty woodland soil, the tail may leave a characteristic drag mark running down the centre of the trail between the hind-foot prints, an essentially diagnostic feature for pangolin sign.
This distinctive trail pattern is one of the primary tools used by field surveys to confirm pangolin presence in areas where camera trap deployment has not yet occurred. Community rangers trained to identify pangolin tracks can cover far larger areas than camera trap grids allow, and track surveys are being incorporated into systematic monitoring programmes across both Africa and Asia as a cost-effective complement to camera trap and DNA-based detection methods.
Pangolin pups are born with soft, pliable scales that harden over the first days of life. From birth, the pup rides on its mother's body during movement, positioned on her back or at the base of her tail where it is protected by the curve of her body if she rolls defensively. The pup grips the edges of the mother's scales with its small but functional claws, maintaining purchase even during bipedal walking across uneven ground or during swimming.
The mother's gait accommodation during pup transport is subtle but observable: she tends to move more slowly, negotiate terrain more carefully, and stop more frequently than when travelling alone. Young pangolins begin exploring independently on foot at around 3 to 4 months of age, following the mother during foraging bouts but moving under their own power for short distances. The bipedal gait develops gradually; young pangolins initially use a more quadrupedal scrambling movement before the hindlimb musculature strengthens sufficiently to sustain consistent upright walking. By 5 months, when most young pangolins are approaching independence, the adult bipedal locomotion pattern is established.
Pangolin locomotion is a study in functional compromise. The bipedal walking posture of ground species is not a curiosity but a direct adaptation to preserve the digging claws that are their primary foraging tools. The plantigrade hind foot provides the stable bipedal platform that makes this posture viable. Arboreal species redirect the same basic limb architecture toward gripping and canopy navigation, with prehensile tails adding a fifth point of contact. Swimming is a universal capability, facilitated by the accidental buoyancy provided by air trapped beneath the scales. Together, these locomotion modes give pangolins access to a wider range of habitat and foraging opportunities than their specialised diet might suggest, while the underlying anatomy leaves a distinctive trail signature that field researchers use to track and monitor these elusive animals.
Ground pangolin species, including Temminck's ground pangolin and the giant ground pangolin, regularly walk bipedally, carrying their forelimbs curled and raised off the ground. This protects the large digging claws on their forefeet from wear during overland travel. Arboreal species move quadrupedally through tree branches, using a prehensile tail for additional support.
Ground pangolins typically move at 1.5 to 3 kilometres per hour during normal foraging. When alarmed, they can increase speed briefly to around 5 kilometres per hour. They are not built for sustained fast running; their primary defensive strategy is rolling into a tight armoured ball rather than fleeing from predators.
Yes. All pangolin species are capable swimmers. Their scales trap air beneath them, providing natural buoyancy. Pangolins swim with a sinuous body motion, using their hindlimbs to paddle while the forelimbs remain tucked. Ground pangolins regularly cross rivers and streams within their home ranges and can traverse water bodies of several hundred metres or more without apparent difficulty.
Pangolin tracks are highly distinctive. Front tracks show three large, widely-spaced curved claw impressions with a narrow hand pad. Hind tracks show five smaller claw impressions with a broader, plantigrade foot pad. Walking trails are dominated by hind-foot tracks, with occasional front claw drag marks where the animal momentarily lowered its forelimbs. Tail drag marks may appear in soft substrates such as sand or mud, running down the centre of the trail between hind-foot prints.