Howler infant number 5 on the back of a juvenile capuchin carrier, who is using stone tools at an anvil site in a stream bed. Usually, this behavior in females is described as adoption, thought to be ...

A young male white-faced capuchin monkey carrying a baby howler monkey, caught by a remote camera trap on Jicarón. On an island off the coast of Panama lives a population of wild primates with a ...

From a small island off the coast of Panama to the farthest reaches of space, the Smithsonian advanced our knowledge of the ...

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 ...

Off the coast of Panama, on an island uninhabited by humans, a culture unlike any other has arisen. Now, the monkeys have taken their shenanigans a step further. They have been caught doing something ...

Brazilian capuchins have been monkeying around with stone tools for hundreds of years, Oxford University scientists have discovered. The primates have been observed using stones as hammers and anvils ...

A capuchin monkey in Costa Rica. Scientists studying the stone-smashing habits of bearded capuchin monkeys in Brazil have found that the primates inadvertently produce stone flakes that look very ...

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 ...

WASHINGTON (AP) — A baby howler monkey clung to the back of an older male monkey, its tiny fingers grasping fur. But they're not related and not even the same species. Scientists spotted surprising ...

Study published in PNAS by researchers from Brazil and the UK shows that primates from the Brazilian semi-arid biome are able to acquire new knowledge as long as their presence is tolerated by other ...