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 ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. WASHINGTON (AP) — A baby howler monkey clung ...

To better understand how primates adapt to the increasing presence of humans, researchers monitored a group of 17 capuchin monkeys for a year and a half. Confined to a green area in the municipality ...