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

A group of white-faced capuchins on a remote island have started stealing infants from another primate species, and ...

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

A rare cultural behavior spreads among young male capuchins and baby howlers, raising questions about animal traditions and ...

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

White-faced capuchin monkeys on Jicarón Island have started abducting baby howler monkeys, surprised scientists report. It’s ...

Scientists on Panama's Jicarón Island were mystified by photos and videos of young male capuchins carrying howler monkeys on their backs for days at a time ...

Scientists studying camera trap footage from Jicarón Island spotted something unusual: a capuchin monkey carrying an infant howler monkey on his back. Now, they’re trying to learn what it means.

On Panama’s Jicarón island, biologists documented five male capuchin monkeys carrying at least eleven different infant howler ...

That's what scientists think after watching a bunch of male white-faced capuchin monkeys ... she saw a capuchin carrying a howler monkey baby. "It was not something we'd seen before.