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 ...

Camera trap footage from Jicarón Island revealed a male capuchin monkey carrying a howler infant on its back. Now, scientists are trying to understand what's driving this kidnapping behavior. - ...

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 ...

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 ...

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 ...

On an island in Panama, a fad that one researcher called “viscerally disturbing” has recently taken off among a group of young male monkeys. These adolescents and juveniles have started to kidnap the ...