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

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 ...

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

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