TOM MCHUGH / SCIENCE PHOTO LIBRARY TOM MCHUGH / SCIENCE PHOTO LIBRARY
Chimpanzee. Chimpanzee (Pan troglodytes) drinking water from a handful of leaves used as a sponge. Tool use such as this is rare amongst animals, and is considered a sign of high intelligence. The chimpanzee is a great ape which inhabits the forests and forest edges of central and western Africa. They are social animals, with several family groups living together. They are highly communicative, and have a huge repertoire of facial expressions, vocalisations and gestures. It has been shown that chimpanzees' learning abilities are similar to those of young human children.
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