The anthropoid structure of certain apes includes lack of a tail and cheek pouches.某些猿的类人结构包括无尾和无颊袋。Gorillas, chimpanzees, and gibbons are all anthropoid apes, having long arms, no tails, and highly developed brains.大猩猩、黑猩猩和长臂猿都是类人猿,都有着很长的前肢、高度发达的大脑,且没有尾巴。