All of the great apes—chimpanzees, bonobos, gorillas, and orangutans—are endangered. But they’re some of the coolest creatures out there! Take this quiz to see how much you know about these awesome primates, then give the quiz to your friends and family. The more you tell people about these amazing animals, the more they'll want to help them!
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Photo credits: Isselee, Dreamstime; Cealbiero, Dreamstime; Iakov Filimonov, Dreamstime; Michael Nichols, Image Sales; Robert Madden, Image Sales; GlobalP, iStockphoto; Smileus, Dreamstime