* Other primates: Chimpanzees and gorillas have been known to attack and kill monkeys.
* Snakes: Large snakes, such as pythons and boas, can also prey on monkeys.
* Birds of prey: Eagles, hawks, and owls are all known to hunt and eat monkeys.
* Crocodiles: Crocodiles can be found in many of the same habitats as monkeys, and they will often prey on them if they have the opportunity.
* Humans: Humans are also predators of monkeys, and they have hunted them for food and fur for centuries.