Brown howler monkeys (Alouatta guariba), endemic to the Atlantic Forest in Brazil and Argentina, became one of the 25 most threatened primate species following a yellow fever outbreak in late 2016. In ...

Brown howler monkeys are endemic to the Atlantic Forest in Brazil and Argentina and became one of the 25 most threatened primate species following a yellow fever outbreak in late 2016. In response, ...

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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Here a white-faced capuchin monkey perches on a tree branch in Manuel Antonio National Park in Costa Rica. A group from the same ...

A black howler monkey sits on a tree branch in the Amazon Rainforest, Brazil. The surrounding forest shows dense vegetation and tall trees. Wildlife like this monkey is common in the forests of the ...