Ключевые слова: alone, animal, ape, background, bar, behind, brown, cage, caged, captive, captivity, cell, chimpanzee, close, closeup, cute, environment, experiment, expression, eyes, face, forest, fur, holding, iron, jail, jungle, laboratory, locked, male, mammal, metal, monkey, natural, nature, old, orangutan, portrait, primate, prison, sad, sadness, white, wild, wildlife, young, zoo,