Which monkeys have red butts?

Here's why:

* Mandrills are large, brightly colored monkeys found in central Africa. The males have a striking red and blue face, and their butts are a vibrant red.

* Baboons also have red butts, but they are usually less bright than the mandrill's.

* Other monkeys may have red butts, but it's not as common or as distinct as in the mandrill and baboon.

So, while other monkeys might have some reddish coloration on their bottoms, it's the mandrills that are most famous for their bright red butts.