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Bill Rivers is a real cowboy, born in Nebraska, raised on a farm in Missouri. When he was little, he wanted to be a veterinarian. He finds himself in Hollywood training animals for the movies and tv. He is 64 years old now and lives on a ranch in Texas. With Disney and all the major studios, Bill's thing is to draw any animal ! Chimpanzees, zebras, camels and oryx have no more secrets for him.