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West African, or masked, chimpanzee (Pan troglodytes verus).Helmut Albrecht/Bruce Coleman Ltd.Species (Pan troglodytes) of great ape that inhabits the rain forests and woodland savannas of equatorial Africa, the closest living relative to humans. Chimps are 35.5 ft (11.7 m) tall when standing upright, weigh 70130 lbs (3260 kg), and have a brown or black coat and a bare face. They do most of their feeding in the trees, swinging from branch to branch; to move any distance they walk, usually on all fours, on the ground. They eat mostly fruits, berries, leaves, and seeds, some termites and ants, and occasionally a young baboon or bush pig. They are capable of problem solving, tool use, and deceit. Chimpanzees are highly social and live in flexible groups (15100 or more members) known as communities. In the wild they live about 45 years, in captivity more than 50. See also bonobo.
(born April 3, 1934, London, Eng.) British ethologist. Soon after finishing high school, she fulfilled her childhood ambition of traveling to Africa, where she assisted Louis Leakey (see Leakey family), who suggested she study chimpanzees. She received a Ph.D. from Cambridge University for her work and remained at the research centre she founded in Gombe, Tanz., until 1975. In 1977 she cofounded the Jane Goodall Institute for Wildlife Research, Education, and Conservation in the U.S. Her observations established, among other things, that chimpanzees are omnivorous rather than vegetarian, can make and use tools, and have complex and highly developed social behaviours. Noteworthy among her writings are In the Shadow of Man (1971) and The Chimpanzees of Gombe (1986). She was made a Dame of the British Empire in 2003.
© 2010 Encyclopædia Britannica, Inc.
