A capuchin named Joker started the apparent trend, leading researchers to suspect "there was something a little quirky about ...

Capuchins are also known for developing odd social rituals across their range. Scientists studying mainland populations have ...

At first, behavioral ecologist Zoë Goldsborough thought the small figure seen on the back of a capuchin monkey in her camera ...

Plus, researchers could hear adult howler monkeys calling back and forth with the infants, who would sometimes try to crawl ...

A Chinese zoo is facing criticism after filming a baby monkey smoking ... before a woman off-screen pulls it out of its mouth and tells him smoking is harmful. The monkey reluctantly gives it ...

Mr. Baboon opens his mouth wide and reveals ginormous front ... And he might not be as friendly as he looks. Monkey bites are surprisingly common around the world. They account for up to 20 ...