Semnopithecus

Gray langurs are monkeys from India.

Most of them are gray. They also have black faces and ears.

These monkeys live in many places. They live in forests and mountains. They even live in big cities.

They spend half their time on the ground. They spend the other half in trees. They use their long tails to help them.

Langurs like to eat plants. They eat leaves, fruit, and seeds. They also eat grass and roots.

They live in groups to stay safe. Mothers look after their small babies.

It is fun to watch them live together.

Gray langurs are a group of monkeys from India.

They live in many places. They live in forests and mountains. They even live in big cities.

Most langurs are gray or yellowish. They have black faces and ears. Their tails are very long. A tail is often longer than their whole body. In the north, their tails loop toward their heads. In the south, the tails make a "U" or "S" shape. Males are always larger than females.

Langurs spend half their time on the ground. They spend the other half in trees. They can walk on four legs. They also jump and leap through the air.

These monkeys eat mostly plants. They like leaves and fruit. They also eat seeds, grass, and roots. Sometimes they eat insect larvae or spider webs.

Langurs live in social groups. Some groups have one male and many females. Other groups have many males. Females in a group are often related. They stay close and groom each other.

This helps them stay friendly. Babies are born with dark hair. They stay close to their mothers for a long time.

Gray langurs are a special group of monkeys from the Old World. Most of them live on the Indian subcontinent.

You can find them in many different places. They live in thick forests and open woods. They also live in dry deserts and high mountains. Some langurs even live near people in big cities like Jodhpur.

These monkeys are very good at living in many different homes.

These monkeys have a very specific way of moving. They spend about half of their time on the ground. They spend the other half of their time in trees.

Most of the time, they walk on all four legs. They can also make big leaps through the air. Sometimes they even hop on two legs to climb things. They can jump forward or even jump while going down a slope. Their tails are very long and are usually longer than their bodies.

Scientists have spent a long time studying these monkeys. For a long time, people thought there was only one type called Semnopithecus entellus. However, things changed around the year 2001. Researchers began to recognize many more types of langurs. By 2005, some books listed seven different species. Now, there are eight recognized species in this group. This includes the Nepal gray langur and the Kashmir gray langur.

There are many interesting facts about how langurs look and act. Most langurs are gray or sometimes a bit yellowish. They almost always have black faces and black ears.

In the north, their tails loop toward their heads when they walk. In the south, their tails make a "U" or "S" shape. Males are always larger than the females. The heaviest langur ever found was a male Nepal gray langur. They mostly eat plants like leaves, fruits, and seeds. They even eat things like spider webs and insect larvae.

Langurs are very social animals that live in groups.

Some groups have just one male and several females. Other groups have many males of all different ages. Females in a group are often related to each other. They spend a lot of time grooming one another to stay friendly.

Babies are born with dark hair and pale skin. For the first week, they stay very close to their mothers. By the time they are two years old, they start helping to care for other infants.

The genus *Semnopithecus* consists of a group of Old World monkeys known as gray langurs. These primates are native to the Indian subcontinent and have become very important to study due to their wide range. They are highly adaptable animals that live in many different environments. You can find them in thick tropical rainforests and dry deserts. They also live in temperate coniferous forests and high mountain habitats. Some populations even live in large urban areas, such as the city of Jodhpur, which has a population of up to one million people.

Gray langurs have very specific physical traits and movement patterns. Most species have gray or yellowish fur with distinct black faces and ears.

Their tails are always longer than their bodies. You can often tell where a langur is from by how it carries its tail. North Indian langurs loop their tail tips toward their heads while walking. In contrast, south Indian and Sri Lankan langurs use an inverted "U" or "S" shaped tail carriage. They move mostly by walking on all four limbs, which is called quadrupedal locomotion. However, they also use bipedal hops and can leap horizontally or while descending.

The science of how we classify these monkeys, known as taxonomy, has changed significantly over time. For a long time, scientists believed there was only one species called *Semnopithecus entellus*. Around 2001, researchers began to recognize more species within the genus. By 2005, some records listed seven different species. Today, there are eight recognized species. These include the Nepal gray langur, the Kashmir gray langur, and the Black-footed gray langur.

Some species, like the Nilgiri and purple-faced langurs, were even moved into the *Semnopithecus* genus after genetic studies were conducted.

Genetic research has helped scientists understand how these species are related. Studies of mitochondrial DNA and nuclear DNA have shown how different groups cluster together. For example, research on the *T. pileatus* species group shows a mystery. Their mitochondrial DNA places them in *Semnopithecus*, but their Y chromosome data places them in *Trachypithecus*. This might happen because of hybridization, which is when two different species mate.

A 2013 study also showed that some species, like *S. entellus* and *S. hypoleucos*, hybridize where their ranges overlap. This shows that the boundaries between species are not always perfectly clear.

Gray langurs are primarily herbivores, meaning they eat mostly plants. They prefer eating leaves from trees and shrubs, but their diet is very diverse. They also eat fruits, seeds, grass, bamboo, and even coniferous needles or cones. They can even consume non-plant items like spider webs, termite mounds, and insect larvae.

While they do drink water, they get most of their hydration from the moisture found in their food. This diet allows them to survive in many different climates, from sea level to altitudes of 2,500 meters.

Social life is very important for these monkeys, and they live in three main group types. There are one-male groups, which include one adult male and several females. There are also multiple-male groups and all-male groups. In one-male groups, the resident male is usually the only one who breeds. In multiple-male groups, the highest-ranking male fathers most of the offspring.

Females are often related to one another and stay in their original groups for life. They maintain social bonds through grooming, which is a way of cleaning and bonding with others. While female relationships are usually friendly, relationships between males can range from peaceful to violent.

Raising young langurs involves specific stages of growth and care. A female's gestation period, or the time she is pregnant, lasts about 200 days. Most females give birth to a single infant during the night.

Newborns have thin, dark hair and pale skin. For the first week, they stay attached to their mother's chest to sleep and suckle. By the second or third month, they are capable of running and jumping. Interestingly, langurs practice alloparenting. This means that once infants reach about two years of age, they may be cared for by other females in the group, not just their own mother.