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Orangutan washes himself with a towel. Today washing himself, tomorrow, brainsurgery. hehehe .. !!! Orangutans are often referred to as the smartest animals by humans, but according to Discovery's Animal Planet, the chimpanzee, followed by a dolphin who gets the credit. Orangutans are listed as the third smartest animal besides humans. Orangutans have a strong culture, advanced communication system and can use tools in the wild. They exhibit both cognitive abilities and knowledge, and mothers take care of their children for many years to teach them something about life's realities