Monkey Diet & Health, Monkey Facts & Species
Do Monkeys Eat Meat? Hunting and Animal Protein in Primate Diets
Yes — most monkeys eat some animal matter, and several hunt vertebrates deliberately. Meat is a small fraction of the diet by weight for nearly every species, but it delivers concentrated protein, fat and micronutrients that plant food supplies poorly.
Key takeaways
- Almost all monkeys are technically omnivores; pure herbivory is rare.
- Insects are the most important animal food for small species.
- Baboons are the most active vertebrate hunters among monkeys, taking hares and young antelope.
- Capuchins raid nests and hunt squirrels, lizards and coatis.
- Even leaf-eating colobines ingest invertebrates incidentally with foliage.
The spectrum of animal food
| Food | Who eats it | Frequency |
|---|---|---|
| Insects and spiders | Squirrel monkeys, tamarins, marmosets, guenons | Daily |
| Bird eggs and nestlings | Capuchins, macaques, baboons, vervets | Seasonal, opportunistic |
| Lizards and frogs | Capuchins, macaques, tamarins | Occasional |
| Crabs and shellfish | Coastal macaques, capuchins, Japanese macaques | Tidal |
| Small mammals | Baboons, capuchins, blue monkeys | Rare but deliberate |
| Other primates | Baboons (rarely, bushbabies and young vervets) | Very rare |
Baboons: the serious hunters
Olive and chacma baboons hunt hares, birds, young gazelle and impala, sometimes in loose cooperative pursuits. Meat is distributed unevenly — dominant males monopolise carcasses, and sharing is more tolerated theft than genuine cooperation. Hunting rates vary hugely by population, which suggests a strong cultural component.
Capuchins: opportunistic and inventive
Capuchins systematically search bromeliads, curled leaves and dead wood for prey, raid bird nests, and have been recorded killing squirrels and juvenile coatis. On the coast they crack open crabs and shellfish, sometimes with stones. Their broad diet is a major reason they thrive in disturbed forest. See Capuchin Monkey Facts.
Unexpected examples
- Blue monkeys in Kenya have been documented catching and eating bats.
- Long-tailed macaques in Thailand use stone tools to open shellfish on tidal flats.
- Japanese macaques in coastal troops take shellfish and fish stranded in pools.
- Tamarins hunt frogs and lizards, taking prey nearly as long as their own forearm.
Why animal protein matters
Fruit is rich in sugar but poor in protein and specific amino acids. Insects and small vertebrates deliver protein, fat, iron, zinc and vitamin B12 efficiently. For small-bodied monkeys with high metabolic rates, insects are not a supplement — they are a core food. For larger frugivores, occasional meat covers gaps during lean fruiting seasons. See What Do Monkeys Eat?
Which monkeys eat the least meat
Colobines — colobus, langurs, proboscis and snub-nosed monkeys — are the closest to true herbivores. Their fermenting stomachs extract protein from leaf bacteria, so they have little need to hunt. Geladas, living on grass, are similar. See Monkey Diet by Species.
Frequently asked questions
Are monkeys carnivores or herbivores?
Most are omnivores. A minority of leaf specialists are effectively herbivores.
Do monkeys hunt in groups?
Baboons sometimes pursue prey collectively, but coordinated hunting like that of chimpanzees is not typical of monkeys.
What percentage of a monkey’s diet is meat?
Usually under 5 percent by weight for vertebrate prey, though insects can exceed 30 percent in small species.
Do monkeys eat other monkeys?
It is very rare. Baboons have been recorded taking young vervets and bushbabies, but it is unusual behaviour.
Should captive monkeys be fed meat?
Only under veterinary or specialist guidance, since requirements differ enormously between species. See Feeding Guide for Different Monkey Species.
Related: Fruits Monkeys Love, Monkey Predators, Ultimate Guide to Monkeys.
