Members of a species of hominid found in tropical forests and wet savannas of western and central Africa, although their habitat was formerly much larger. They are characterized by a body that is mostly covered by dark brown hair, having thumbs and its big toes that are opposable, and differing from the other extant species of the genus Pan, bonobos, in being more robust, having a more protruding face, spending more time out of the trees, and having different behaviors and dynamics in social groups. In older classifications, the bonobo and the common chimpanzee were classified as one species.
