A mandrill is the largest breed of monkeys in Ape-freeka. (Chimps, gorrillas, baboons and orangutans are not considered monkeys.) Mandrill is a totally appropriate term to apply to the male nigger buck, because:

1. It is very active sexually.
2. It abandons its female and offspring
3. It has a hideous face.
4. It has huge nostrils.
5. It has slanted eyes.

See picture here: