It's no secret that humans and primates share many common traits (and the vast majority of our DNA), but some monkey behaviors still leave scientists baffled. One of these behaviors was seen as ...

A young howler monkey in the trees -- the capuchins spend more time on the ground A new trend is catching on among bored young male capuchins: kidnapping baby howler monkeys, in what scientists say is ...

Observations of Coiba’s tool-using immature capuchin monkeys show them carrying abducted infant howler monkeys. What is the reason for this behavior? Vanessa Crooks Caught in the act! Capuchin monkeys ...

Here a white-faced capuchin monkey perches on a tree branch in Manuel Antonio National Park in Costa Rica. A group from the same genus has been observed with stolen howler monkey babies on a small ...

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Monkeys have been stealing tourists' valuables — including their phones and wallets — in exchange for food rewards at a popular, cliff-side temple in Bali, Indonesia. The mischievous, long-tailed ...

A new trend is catching on among bored young male capuchins: kidnapping baby howler monkeys, in what scientists say is the first time animals have been recorded stealing another species' infants for ...