Laotian langur

The Laotian langur, also called the white-browed black langur, Trachypithecus laotum, is a primate of the family Cercopithecidae endemic to Laos in Southeast Asia. The English zoologist Oldfield Thomas first described it in 1921. Genetic studies show it is closely related to the Indochinese black langur and the Hatinh langur, and some zoologists have suggested treating those two as subspecies of it. It has dark black fur over most of the body, a black face encircled by white hair and a small tuft of black hair on the head, and newborns have golden fur. Its natural habitat is subtropical or tropical dry forest. It is classified as endangered; studies in 2021 found that its habitat has shrunk because of deforestation and hunting and that its groups were smaller than in studies of the 1990s, and several protected areas in Laos shelter it.