and they resemble each other to the point that bonobos were once called “pygmy chimpanzees.” But chimps and bonobos also have ...

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 ...

“So you are very lucky.” The bonobo, once called the pygmy chimpanzee, is a unique species of ape, native only to forests on the left bank of the Congo River. Recent research casts new light ...

"Without lethal competition between groups, a link between ingroup cohesion and outgroup competition wouldn't be so adaptive, ...