She is part of a team of researchers that recently discovered that the primates tend to tinkle when they see nearby chimps do the same. In a study published Monday in the journal Current Biology ...

National Geographic assigned Hugo to document chimp behaviors but also to film and photograph what they called “human interest”—Jane playing with the chimps and even washing her hair.

Urinating is a contagious behaviour among chimpanzees, a study has found. Individual chimps that see another chimp urinating will respond by also emptying their bladder, especially if the first to ...