A colony of African vervets in Dania Beach raises big questions about how humans can and should manage nonnative species.

Fossils show that howler monkey ancestors, Stirtonia victoriae, were eating leaves 13 million years ago, altering body size ...

Fossils show that howler monkey ancestors were eating leaves 13 million years ago, shaping body size and evolution.

From tool-using chimpanzees to puzzle-solving capuchins, the primate world is packed with surprising brainpower. But how do ...

Thirteen million years ago, a group of medium-sized monkeys known for guarding their territory among the treetops with fearsome "howls" started doing something new. These monkeys, among the oldest ...