Dunn’s team analyzed the biological “budget” of these primates and found a direct negative correlation: males with large ...

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 ...

Off the coast of Panama, on an island uninhabited by humans, a culture unlike any other has arisen. Now, the monkeys have taken their shenanigans a step further. They have been caught doing something ...

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, ...