Scientists were left baffled after examining 15 months' worth of footage showing the monkeys doing something they'd never ...

On a remote Panamanian island, researchers have observed for the very first time young male capuchin monkeys stealing howler ...

A new trend is catching on among bored young male capuchins: kidnapping baby howler monkeys, in what scientists say is the ...

Video footage shows male capuchin monkeys carrying at least 11 howler monkey babies between 2022 and 2023. The monkeys' ...