Jicarón Island is peaceful. It has no predators, and the animals that live there are mostly left undisturbed. But when ...

The scientists nicknamed one capuchin kidnapper Joker because the scar at the side of its mouth reminded them of the "Batman" ...

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

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 ...

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.

Scientists have found surprising video evidence of what they call monkey kidnappings – and they’re trying to figure out why.

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

Barett said, when they saw a member of the capuchin group carrying a howler monkey on its back, it was really surprising. Initially, they thought the howler capuchin was a one-off pair, then they saw ...

Male capuchin monkeys on a Panamanian island were documented carrying around infant howler monkeys for no clearly discernible reason.

Young male capuchins have developed a strange trend of acquiring baby howler monkeys. It doesn't end well for the babies.

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 ...