African Ground Pangolin Diet: What Pangolins Eat and Why It Matters
The African ground pangolin — known scientifically as Smutsia temminckii and colloquially as Temminck's ground pangolin — is one of the most specialised feeders in the mammal world. Its entire anatomy, from the elongated skull and toothless jaw to the muscular stomach lined with keratinous spines, is optimised for a single dietary strategy: consuming ants and termites in very large quantities, very efficiently.
This dietary specialisation is simultaneously the pangolin's greatest evolutionary success story and its most significant vulnerability. An animal that eats only two food types is highly exposed to anything that disrupts the abundance, accessibility, or distribution of those prey. Understanding what pangolins eat, how they find food, and how prey availability varies across seasons and habitats is fundamental to effective conservation management.
The Exclusive Myrmecophage
The term for an animal that eats primarily ants and termites is myrmecophage, from the Greek for ant-eater. The African ground pangolin is an obligate myrmecophage — it does not consume plant matter, vertebrate prey, eggs, or any other food source under normal circumstances. This distinguishes it from omnivores like aardvarks, which eat predominantly ants and termites but will opportunistically consume other food sources, and from facultative myrmecophages like some bears, which eat insects as a seasonal supplement to a broader diet.
The pangolin's commitment to myrmecophage is total and irreversible in the sense that its digestive system, dentition (entirely absent — pangolins have no teeth), and jaw musculature have evolved specifically around this diet. No other food source can substitute effectively, which creates profound challenges for captive care and rehabilitation.
Preferred Prey Species in South Africa
Not all ants and termites are equally palatable or nutritionally equivalent to pangolins. Field studies, combined with stomach content analyses of individuals that died in the wild or in captivity, have identified consistent patterns of prey preference across South African pangolin populations.
| Prey Type | Common Name | Preference Level |
|---|---|---|
| Anoplolepis custodiens | Sugar ant / Cocktail ant | High — frequently targeted |
| Camponotus fulvopilosus | Hairy carpenter ant | High — large colonies, easy access |
| Trinervitermes trinervoides | Snouted harvester termite | High — abundant in grassland |
| Microhodotermes viator | Harvester termite | Moderate — seasonal dependence |
| Macrotermes natalensis | Large mound termite | Moderate — accessed via mound excavation |
| Dorylus species | Driver / army ants | Occasional — avoided when active |
The prevalence of cocktail ants and harvester termites in pangolin diets is not accidental. These species form very large colonies, often in diffuse underground networks that can be accessed with relatively modest excavation effort, and they are consistently abundant in the grassland and bushveld habitats favoured by Temminck's ground pangolins across South Africa, Botswana, and Zimbabwe.
How Pangolins Find Prey
Pangolins locate food almost entirely by olfaction. Their vision is poor and plays a minimal role in prey location. The long, tapering snout that gives pangolins their distinctive silhouette houses an olfactory system capable of detecting ant and termite pheromone trails at concentrations far below human detection thresholds.
A foraging pangolin moves slowly across the landscape, pausing frequently to sniff the ground surface and push the snout into soil crevices. When a promising scent trail is detected, the pangolin follows it, excavating with the powerful front claws when the trail leads underground or into a mound. The excavation depth varies considerably: small ant nests may be accessed with a few centimetres of digging, while large termite mounds may require penetration of 20 to 30 centimetres through hardened cement-like soil that is remarkably tough relative to the mound's outer surface.
The Sticky Tongue Feeding Mechanism
Once a nest is opened, feeding is accomplished via the extraordinary tongue. A pangolin's tongue is among the longest relative to body size of any mammal — in a large adult Temminck's ground pangolin, it can extend 40 centimetres beyond the mouth tip. The tongue is not attached at the back of the mouth as in most mammals; instead, it anchors near the sternum and extends through the chest cavity, with the unused length coiled within a specialised sheath adjacent to the stomach.
The tongue surface is coated with extremely sticky mucus secreted by massive parotid glands. When the tongue enters a nest cavity, ants and termites adhere instantly to the mucus coating. The tongue retracts in under a second, and another lick follows immediately. A single pangolin can consume several hundred insects per minute during active feeding, making a productive nest worth considerable time investment before moving to the next location.
Gastric Processing Without Teeth
Because pangolins have no teeth, food is processed entirely in the stomach. The pangolin's stomach is unusually muscular and its interior lining bears keratinous spines — hardened projections that grind food mechanically as the stomach contracts. This functional equivalent of teeth operates on the same mechanical grinding principle; it simply happens inside the gut rather than in the mouth. Pangolins also routinely swallow small stones and grit, which accumulate in the stomach and assist the grinding process, similar to the gizzard stones used by birds.
Seasonal Diet Variation
Ant and termite availability in South African savannas and grasslands is strongly seasonal. Both groups are most abundant and accessible in the wet season (October to April), when warmth and moisture maintain large active colonies at or near the surface. During the dry winter months (May to August), colony activity decreases, termite mounds harden as soil moisture drops, and many ant species significantly reduce their surface activity.
Pangolins respond to this seasonal variation by adjusting their foraging strategy. In winter, they tend to focus on species whose colonies remain active underground, digging deeper and spending more time at productive sites rather than ranging widely. GPS telemetry studies in South Africa's North West Province have shown that pangolin movement rates decrease significantly in winter, consistent with a strategy of conserving energy while targeting the most reliable prey sources within a familiar home range.
Prey Selectivity and Avoidance
Pangolins are not indiscriminate feeders despite the common assumption that any ant or termite colony will do. Field observations consistently show that pangolins actively avoid certain ant species, notably the army ants of the Dorylus genus when their swarms are active. These species mount rapid, painful biting defence responses that even a heavily scaled pangolin finds aversive. Driver ant raids may cause pangolins to curl defensively and wait out the swarm rather than attempting to feed.
Pangolins also show consistent avoidance of heavily disturbed or pesticide-treated areas. On agricultural land adjacent to protected areas, pangolins are significantly less common than habitat quality alone would predict, likely because pesticide application reduces colony density and size for preferred prey species. This is a significant conservation concern in regions where cultivated land abuts natural habitat.
Diet in Rehabilitation and Captivity
Feeding pangolins in captivity or rehabilitation settings is one of the most challenging aspects of pangolin care. No commercially prepared food replicates the physical texture, chemical composition, and behavioural engagement of live prey, and pangolins in captivity frequently refuse food initially or become dependent on a narrow subset of acceptable prey species that may be difficult to source consistently.
The Johannesburg Wildlife Veterinary Hospital and other South African rehabilitation centres have developed detailed feeding protocols using locally harvested ant and termite colonies, supplemented with purpose-formulated insectivore mixes introduced gradually to acclimatising animals. Even with expert care, some pangolins brought into captivity in poor condition die before achieving stable feeding behaviour — a stark illustration of how critically the pangolin's survival depends on access to its highly specific natural diet.
Diet as a Conservation Lens
The African ground pangolin's dietary specialisation is not merely a biological curiosity — it is a central organising principle of pangolin conservation. Protected area boundaries need to encompass sufficient ant and termite habitat. Habitat restoration projects must consider whether invertebrate prey communities will recover alongside plant communities. Climate change assessments of pangolin vulnerability must account for how shifting rainfall and temperature patterns will affect the seasonal availability and distribution of key prey species.
A pangolin is only ever as secure as its next meal. Protecting these remarkable animals means protecting not just the land they walk on, but the invisible underground networks of insects that sustain them — an ecological dependency as ancient and precise as the animals themselves.