Ключевые слова: alone, animal, ape, bars, bonobo, cage, captive, captivity, captured, chimpanzee, circus, close up, depression, despair, emotion, environment, exhausted, exhibit, expression, eye, face, fence, freedom, gaol, husbandry, illegal, jail, locked, loneliness, lonely, look, mammal, metal, monkey, poor, portrait, primate, prison, prisoner, protection, sad, sadness, skinny, solitude, suffer, torture, trap, welfare, zoo,