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Great apes

„Humans had evolved from apes“ is the most controversial quotation from Charles Darwin. The great apes are the biggest living primates. They can reach a weight up to 200 kilogramm and a hight of 2 meters when standing erect. Social behavior of chimpanzees is very distinctive. They communicate through noises, coordinate hunts on smaller monkeys and sometimes contuct war on other groups in the neighborhood. Most often usage of tools has been observed with chimpanzees, too.