A capuchin named Joker started the apparent trend, leading researchers to suspect "there was something a little quirky about ...

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

Biologists have documented white-faced capuchin monkeys on Panama’s Jicarón Island abducting and carrying infant howler monkeys, a previously unseen behavior in wild primates, according to a study ...

The Scopes “monkey trial” garnered international attention, and the battle that was fought continues in some form in other ...