These are the 10 largest monkeys in the world based on maximum weight. The gelada, sometimes called the bleeding-heart monkey, can weigh up to 45 pounds. This monkey is a terrestrial species that ...

Mandrills are the largest monkey species, and they are also some of the most colorful. Male mandrills have blue and red faces ...

These vocal primates are the biggest of all the New World monkeys. Unlike Old World monkeys, howlers and other New World species have wide, side-opening nostrils and no pads on their rumps.