At first, behavioral ecologist Zoë Goldsborough thought the small figure seen on the back of a capuchin monkey in her camera ... the Max Planck Institute of Animal Behavior, University of Konstanz, ...

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

Scientists have found surprising video evidence of what they call monkey kidnappings – and they’re trying to figure out why.

Capuchin monkeys in Panama were filmed carrying howler monkey babies, sparking confusion among scientists. The unusual ...