Black-shanked douc

The black-shanked douc, Pygathrix nigripes, is a douc found mostly in the forests of eastern Cambodia, with smaller populations in southern Vietnam, in the Annamite Range, a mountainous area that crosses both countries. Its habitat is mostly evergreen mountain forest in the middle to upper canopy, where it moves quadrupedally and by brachiation. Among the doucs it is unique in colouring, with a bluish face ringed in yellow around the eyes, and like other doucs its tail is as long as its head and body. Groups of 3 to 30 have been observed, with a fission-fusion dynamic that shifts with food availability, and its diet consists mostly of leaves whatever the season. The genus Pygathrix is endemic to Indochina, and this species lives only in Cambodia and Vietnam.