Plus, researchers could hear adult howler monkeys calling back and forth with the infants, who would sometimes try to crawl ...

A group of white-faced capuchins on a remote island have started stealing infants from another primate species, and ...

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

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 ...