The white-headed langur has two subspecies, one is the Vietnamese subspecies (named subspecies) and the other is the Chinese subspecies. Male head length 55-63 cm, female head length 47-55 cm, male tail length 82-89 cm, female tail length 77-82 cm; male weight 8-15 kg, female weight 6.7-8 kg. Similar in shape and size to the black langur, the head is smaller, the body is thin, the limbs are slender, and the tail is longer than the body. Its body hair is also mainly black. Unlike the black langur, it has a high upright white hair on its head, which is shaped like a pointed white melon rind cap. Half of it is black, the bottom half is white, and there is some white on the back of the hands and feet.

The cubs of the white-headed langurs are very beautiful, with golden hair all over their bodies. The golden-yellow cubs, in the process of growth, first gradually turn gray in the middle of the body, and finally become the appearance of their parents.

Clusters

The White-   headed Langur is alert , very lively, active, very good at jumping. The slender body, slender limbs, and well-developed hips and calluses are just suitable for arboreal and rock-dwelling life, jumping freely in the woods or on the steep cliffs, walking like flying, and the long tail plays an excellent role. balancing effect. It likes to live in groups, and the group is not very large. In a group, it is a small group with five, six, and a dozen, and rarely more than twenty. The size of the group is related to the leadership ability of the monkey king. If a monkey king's leadership ability is weak, then after the group gets bigger, some of the monkeys will run away and form a new group, and the monkey group will be smaller. Therefore, some newly formed monkey groups are similar to families, and the number of newly formed families is small. And some that have not been grouped for a long time will be large, there may be as many as a dozen or even twenty.

Contest for the King

In this group society, there is only one adult male monkey, the Monkey King, and the others are some adult female monkeys , which is a polygamous society. Then there are some juvenile little monkeys in this monkey group, and these juvenile little monkeys have females and males. When these little monkeys reach sexual maturity at the age of three or four, the mother monkey remains in the monkey group and breeds offspring with its mother and other aunts. When the little male monkeys approach sexual maturity, they leave their natal group and become kings among other monkey groups. This process requires fighting. If this new little male monkey wins, then it can go to another monkey group to be the monkey king. If it can't win, it will continue to form a temporary group with a few little male monkeys. After the new monkey king takes office, a very cruel situation will appear, that is, infanticide. The female monkey, who was still carrying the baby monkey, mates with it as soon as possible, and reproduces its own offspring. fish climbed along the edge, after a short rest about 30-40 meters from the hole , he began to jump between the cliffs or tree canopies, playing and playing, just like an acrobatic artist performing in the sky. After that, they jumped onto the canopy of the tree or in the bushes respectively, to eat delicious leaves, buds, wild flowers, wild fruits, etc., while eating and playing, their hands were busy, and sometimes they made out to each other for a while to help catch parasites on the body. Around noon, some go back to the cave to rest, while others sit on a tree or on a rock in the sun with their eyes closed and resting without interfering with each other. After the lunch break, they play and eat again, and as the sun slants west, it gradually moves towards the direction of the cave. After returning to the vicinity of the cave at dusk, after confirming that there was no abnormality, they crawled into the cave one by one to sleep.

Diet

The white-headed langur, as its name suggests, is called langur, because it eats leaves. ~90% are leaves. In its environment, in the environment in which it lives, there are various kinds of leaves. According to each season, it likes to eat what kind of leaves, and then picks what kind of leaves, and the feed intake is not high. Because its stomach has a chamber that can decompose cellulose, the leaves it eats can be decomposed quickly. The white-headed langur usually lives in a cave at night. It lives in this cave for a long time and excretes at the entrance of the cave at night. So after a long time, there will be some dark brown excrement just below the hole.

The   white-headed langur is called the langur as its name implies, because it eats the leaves and uses the tender leaves and branches of the plants. For food, 80% to 90% of its food is leaves. In its environment, in the environment where it lives, there are various leaves. According to each season, it likes to eat what kind of leaves, and then picks what kind of leaves, and the feed intake is not high. Because its stomach has a chamber that can decompose cellulose, the leaves it eats can be decomposed quickly. The white-headed langur usually lives in a cave at night. It lives in this cave for a long time and excretes at the entrance of the cave at night. So after a long time, there will be some dark brown excrement just below the hole.