Ключевые слова: aged, animal, bars, caged, captivity, chimpanzee, closeup, conservation, depth, emotion, enclosure, expression, expressive, eyes, face, fur, gaze, grip, gripping, habitat, hands, intelligence, intense, mammal, nature, poignant, powerful, primate, reflection, rescue, sad, sentient, serious, solemn, soulful, staring, thoughtful, wildlife, zoo,