Psychologists from Durham University, UK, have observed the behavior of 90 sanctuary-living apes to establish whether bonobos were more likely than chimpanzees to comfort others in distress. The study ...

Bonobos, great apes related to us and chimpanzees that live in the Republic of Congo, communicate with vocal calls including peeps, hoots, yelps, grunts, and whistles. Now, a team of Swiss scientists ...