Howler monkey babies have an unusual—and accidental—predator: capuchin monkeys. In Panama, scientists have spotted the primates kidnapping howler infants and inadvertently killing them. But what is causing this behavior? Find out more: https://on.natgeo.com/4mueg2G | National Geographic

On a remote island off Panama, a young capuchin monkey nicknamed Joker may have sparked one of the strangest behavioral trends primatologists have ever seen: kidnapping baby howler monkeys and carrying them around like prized possessions. What started as a one-off event quickly became a disturbing fad among other young males—with deadly consequences. Learn more: https://on.natgeo.com/4kmyIRw | National Geographic

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