Ключевые слова: alone, animal, ape, arboreal, black, bright, brown, cage, calm, captivity, captured, cell, closeup, communication, environment, expression, eye, eyes, face, fence, iron, jungle, lonely, look, mammal, metal, monkey, natural, nature, pets, portrait, primate, prison, reddish, sad, serious, small, thinking, trapped, tropical, wild, wildlife, zoo,