The Common Chimpanzee (Pan troglodytes) are the closest living relatives to humans having split from the human branch of the family only 4 to 6 million years ago. The male common chimp is up to 1.7 metres high when standing, and weighs as much as 70 kilograms; the female is somewhat smaller. They live in large multiple-male and multiple-female social groups called communities and today naturally occur in limited parts of west and central africa.br/br/Zoos are increasingly recognising their role both in conservation and in education, becoming more naturalistic in environment, focusing more on species preservation and scientific research and less on entertainment. The pressure of vanishing and unprotected habitats worldwide forces the consideration of captive management, as for many species - zoos are likely to be the last stop on the way to extinction.