The footage showed the capuchins walking and pounding their stone tools with baby howlers on their backs. But cameras did not ...

"Monkey see, monkey do" has had distressing consequences for howler monkeys on a small island off the coast of Panama.

By Stephen Beech Capuchin monkeys have been caught on camera abducting the babies of another primate. The "weird" fad, ...

On Panama’s Jicarón island, biologists documented five male capuchin monkeys carrying at least eleven different infant howler ...

The scientists nicknamed one capuchin kidnapper Joker because the scar at the side of its mouth reminded them of the "Batman" villain.

Scientists on Panama's Jicarón Island were mystified by photos and videos of young male capuchins carrying howler monkeys on their backs for days at a time ...

A young male nicknamed Joker was probably the first to start carrying a howler monkey baby on his back for days on end. Then ...