Add Yahoo as a preferred source to see more of our stories on Google. Primatologist Susan Perry of UCLA has spent much of the past 35 years studying the complex social lives of white-faced capuchin ...

Howler infant number 5 on the back of a juvenile capuchin carrier, who is using stone tools at an anvil site in a stream bed. Usually, this behavior in females is described as adoption, thought to be ...

Add Yahoo as a preferred source to see more of our stories on Google. This photo provided by researchers shows a baby howler monkey clinging onto a young adult male capuchin monkey on Jicarón Island, ...

A group of male capuchin monkeys kidnapped baby howler monkeys – a different species – on a small island of Panama. Video shows the howler monkeys clinging to the male capuchin monkeys’ backs, but the ...

It's no secret that humans and primates share many common traits (and the vast majority of our DNA), but some monkey behaviors still leave scientists baffled. One of these behaviors was seen as ...

WASHINGTON (AP) — A baby howler monkey clung to the back of an older male monkey, its tiny fingers grasping fur. But they're not related and not even the same species. Scientists spotted surprising ...