The document discusses various facts about great apes. It covers their classification, family tree, behaviors, characteristics, and abilities. Some key points include: - Great apes include gorillas, chimpanzees, orangutans, and gibbons. Gorillas are the largest species and can be 3-4 times stronger than humans. - Baby apes spend about a third of their day walking and playing. Common chimpanzees live both on the ground and in trees, and can learn sign language. - Great apes like gorillas and orangutans eat foods like fruits, insects, and occasionally other small mammals. Eastern lowland gorillas are the largest known ap