The Yunnan snub-nosed monkey is the most endangered of China's three snub-nosed monkey species. The long, shaggy coat is mainly black on the back, arms and legs and white on the front (2). White hair is also present on the flanks and this is particularly long on the adult males. The lips are a deep pink, whilst the face is paler and there are yellowish-grey hairs on the shoulders (2). These monkeys get their common name for their unusual noses; the nasal bones are absent and the nostrils are upturned (2) (5). Young are born white but become grey over several months (2).