PETER MENZEL / SCIENCE PHOTO LIBRARY PETER MENZEL / SCIENCE PHOTO LIBRARY
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Chimpanzee with his trainer. Ricki the chimp listening to instructions from his trainer at the Bailick Ranch and Discovery Zoo, Catskill, USA. From the book 'What I Eat: Around the World in 80 Diets' by Peter Menzel and Faith D'Aluisio.
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