Ключевые слова: alone, animal, animals, ape, background, bars, behind, black, brown, cage, caged, captive, captivity, chimpanzee, cute, depression, endangered, environment, eyes, face, fence, forest, freedom, funny, fur, hair, head, inside, isolated, jail, jungle, lonely, looking, mammal, metal, monkey, monkeys, natural, nature, pet, portrait, primate, prison, sad, sadness, steel, wild, wildlife, young, zoo,