The Mandrill monkey is the largest monkey on earth, and are native to a small pocket of tropical jungle in western-central Africa.

Mandrills are noisy. They communicate with deep grunts and high-pitched screams while they forage and travel.

They have extremely long canine teeth which can be over 2 inches long and can be used for self-defense—though baring them is typically a friendly gesture among mandrills.

The mandrill primarily feeds on fruits, berries, seeds, nuts, roots, leaves, insects and even small mammals and reptiles. Most of their diet is found at ground level or just above.

Learn more here:
National Geographic Mandrill page