Observations of Coiba's tool-using immature capuchin monkeys show them carrying abducted infant howler monkeys. What is the ...

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

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

Male capuchin monkeys on a Panamanian island were documented carrying around infant howler monkeys for no clearly discernible reason.

Plus, researchers could hear adult howler monkeys calling back and forth with the infants, who would sometimes try to crawl away. Camera footage showed one occasion when an adult howler came and tried ...

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

The behavior observed among a group of white-faced capuchins (Cebus capucinus imitator) is extraordinary: the kidnapped ...

Over 15 months on Jicarón Island, researchers saw five capuchin juveniles abduct 11 endangered howler monkey infants — all for no clear purpose.

Capuchins are also known for developing odd social rituals across their range. Scientists studying mainland populations have ...

On an island off the coast of Panama lives a population of wild primates with a remarkable culture. White-faced capuchins on ...

On Jicarón Island in Panama’s Coiba National Park, a population of wild white-faced capuchin monkeys exhibits a striking and ...