Though very close in genetic relationship and virtually next-door neighbors, chimpanzees and a less-well-known species called bonobos in Zaire are socially poles apart. Only identified as a species ...

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 ...

Researchers led by a University of California, Berkeley, comparative psychologist have found that great apes and chimpanzees, our closest living relatives, can recognize groupmates they haven't seen ...