Their tree-to-tree locomotion, called brachiation, is how these swingers get around. The spider monkey’s tail is prehensile, which means “capable of grasping.” It is generally longer than ...

Unlike most monkeys, bald uakaris have very short tails, but move nimbly in the trees without them by using their arms and legs. These New World monkeys live in groups called troops and are quite ...

MEXICO CITY--It’s so hot in Mexico that howler monkeys are falling dead from the trees. At least 83 of the midsize primates, who are known for their roaring vocal calls, were found dead in the ...