Common chimpanzee

The adult male common chimpanzee weighs between 40 and 60 kg (88 and 130 lb), the female weighs 32 and 47 kg (71 and 100 lb), though males in captivity such as Travis the Chimp have reached 91 kg (200 lb). males can measure up to 1.6 m (5 ft 3 in) and females to 1.3 m (4 ft 3 in). Its body is covered by a coarse black hair, except for the face, fingers, toes, palms of the hands and soles of the feet. Both its thumbs and big toes are opposable, allowing a precise grip. The common chimpanzee is both arboreal and terrestrial, spending equal time in the trees and on the ground. Its habitual gait is quadrupedal, using the soles of its feet and resting on its knuckles, but it can walk upright for short distances. The common chimpanzee is a 'knuckle walker', like the gorilla and the bonobo, in contrast to the quadrupedal locomotion of the orangutan, a 'palm walker' who uses the outside edge of its palms.