(CNN) — At first, behavioral ecologist Zoë Goldsborough thought the small figure seen on the back of a capuchin monkey in her camera trap footage was just a baby capuchin. But something, she said, ...

Bound, sedated and stuffed into bags: Poachers are ripping baby spider monkeys from their mothers in the forests of southern ...

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 evidence of what ...

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 ...