Ключевые слова: alone, animal, ape, bar, behind, borneo, brown, cage, captive, closeup, conservation, creature, emotion, endangered, expression, eye, face, freedom, fur, gaol, hair, intelligence, iron, jail, jungle, light, locked, lonely, looking, mammal, metal, monkey, nature, orang, orange, orangutan, orangutan monkey, orangutang, portrait, primate, prisoner, sad, species, sumatra, wild, wildlife, zoo, zoo animals, zoo bars,