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

Young male capuchins have developed a strange trend of acquiring baby howler monkeys. It doesn't end well for the babies.

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 ...

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

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 ...

The indoor environment contains multiple sources of chemical compounds. These include continuous emissions from housing ...

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

“I realized that it was really something that we hadn’t seen before,” Goldsborough said ... Goldsborough’s collaborators from the Max Planck Institute of Animal Behavior, University ...