Hear the booming cries that gave the howler its name. Learn just what these vocal monkeys may be trying to say.

Howler monkeys are relatively small primates known for their incredibly loud, low-frequency roars that sound as if they come from a much larger creature. This is useful in the animal kingdom because ...

A howler monkey infant, only a few days old, clings to a subadult white-faced capuchin monkey as it uses tools. Brendan Barrett / Max Planck Institute of Animal Behavior In June 2022, while watching ...

There’s a serious case of stranger danger unfolding on an island off the coast of Panama. A gang of five juvenile capuchin monkeys living on Jicarón Island has started abducting baby howler monkeys, ...