Ключевые слова: animal, ape, arm, arms, asia, asian, black, black siamang, captive, conservation, cute, ecology, endangered, endangered species, environment, fauna, forest, fur, furry, gibbon, gripping, hanging, hanging on, holding, hylobates, jungle, mammal, mogo, monkey, nature, outdoors, primate, rainforest, rope, siamang, single, social, species, sumatra, swinging, symphalangus, syndactylus, threatened, tropical, vines, wild, wilderness, wildlife, wire cable, zoo,