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 ...
On Jicarón Island, a lush patch of tropical forest floating off the coast of Panama, something strange is unfolding in the treetops. A gang of young white-faced capuchins, clever monkeys already known ...
On an island in Panama, a fad that one researcher called “viscerally disturbing” has recently taken off among a group of young male monkeys. These adolescents and juveniles have started to kidnap the ...