Found from sea level to 6500 feet. In long dry seasons, buds and blossoms, soft pitch, stems, galls, honey, bark and resin, seeds and nuts are also eaten. Animal prey makes up as much as five percent of the diet, with social insects, such as ants and termites, providing the largest amounts. Feeding is essentially an individual activity, but after a cooperative hunt may share morsels in response to begging by others. Females in heat have prominent swelling of the pink perineal skin, lasting two to three weeks or more, and occurring every four to six weeks.
Males have relatively huge testes.
Puberty in both sexes occurs at about seven years, but males are not fully integrated into the social hierarchy until 15 or so. Females raised in captivity begin mating at eight to nine years and give birth for the first time at 10-11 years old. Wild females mature three to four years later. There is no breeding season. Chimpanzee females are not receptive for three to four years after giving birth, then resume sexual activities for one to six months until conception.