The Mona Monkey (Cercopithecus mona) is an Old World monkey that lives throughout western Africa. The Mona Monkey can also be found on the island of Grenada as it was transported to the island aboard slave ships headed to the New World during the 18th century. This guenon lives in groups of up to 35 in arboreal regions. It mainly feeds on fruit but sometimes eats insects and leaves.
The Mona Monkey has brown agouti fur with a white rump. Its tail and legs are black and the face is blue-grey with a dark stripe across the face. The Mona Monkey carries food in cheek pouches.