Semnopithecus schistaceus

The Himalayan gray langur has a head and body length of 62-79 cm, a tail length of 69-103 cm, a total skull length of 12-14.5 cm, a male weight of 9-24 kg, and a female weight of 7.5-18. A large, roaming langur with long hind legs and tail, which is held high when moving across the ground. The body hair is light gray to cream; the back, tail, and outer thighs are the darkest. The ears and almost bare face are black. The hair on the forehead forms a fringe above the eyebrows.
The skin is pale at birth, but turns black before three months; the fur color is also different from that of adults, which is brown-black, turning light gray at two to five months old, and turning gray in adults.
The head is round, the snout is short, the limbs are very long, with long hind legs and tail, the tail is usually longer than the body, and when moving across the ground, the tail is held high, and is earthy gray or gray-brown. Sexual dimorphism, males are slightly larger than females.
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Distributed in Bhutan, China, India, Nepal and Pakistan.
Nyalam, Zhangmu, Jilong, Pengqu River Valley, Xirongxia River Valley, Yadong, Medog, Mazangbo River Valley, Boqu River Valley, Jilong River Valley, Menyu, Luoyu and other places in Tibet.
Inhabits the Himalayan alpine forests and mountain shrubs with an altitude of more than 5,000 meters. It mainly lives in the mountain pine forests or fir forests in the middle and high mountain areas at an altitude of 2,000-3,000 meters, and appears on the stone cliffs in the forests on both sides of the valley.

The Himalayan Gray Langur, also known as Nepal Gray Langur, was once a subspecies of the Indian Gray Langur. It is now a single species with no subspecies differentiation.

The Himalayan gray leaf monkey is a species with a strong terrestrial habitation. It spends 80% of its time on the ground. Because the snow is very thick in winter, the locals also call it a snow monkey.

The Himalayan gray langurs can live in small to large groups of up to 25 individuals, formed by a single male or multiple males, and an adult male has a harem. The group shows a lot of grooming behaviors. They spend 5 hours a day grooming each other. Their calls are relatively low, and they often make a "woop" sound, which is not only a signal for communication between members, but also a warning to other neighboring groups that they occupy territory. Whether running on the ground or jumping on branches, they always bend their long tails high, which looks very impressive.

Although the Himalayan gray langurs have dark faces, they are narcissists. They pay great attention to their image and waste four or five hours a day grooming each other with their companions, hoping that they can have a temperament better than Nicholas Zhao Si. It has a high jumping ability, often leaping more than 8 meters in one leap, and can easily jump from a 12-meter-high tree to the ground.

Although the Himalayan gray langur is widely distributed in the Himalayas, it is subject to human disturbance and various threats, including logging, habitat loss, fire, expansion of human settlement and development activities, encroachment and war, which makes the species vulnerable to such regional threats.

Listed in the 2008 Red List of Endangered Species of the World Conservation Union (IUCN) ver 3.1 - Least Concern (LC).

Listed in the CITES Appendix I protected animals of the Washington Convention.

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