Monkey- Gray langur (Semnopithecus entellus)

Scientific Classification- 
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates 

Monkeys are a large and diverse mammal group that includes most primates.Most species are arboreal, using all four limbs to leap from tree to tree. They can sit upright and stand erect. Most species run along branches rather than swinging arm over arm like the apes. Monkeys are highly social omnivores, organized in clans as large as several hundred individuals headed by an old male.

Basic features: forward-facing eyes, eye sockets, grasping hands, nails, fingerprints, and large brains.
Most monkeys live in the tropical rainforests of Asia, Africa, and Central and South America, or the savannas of Africa.
In terms of reproduction, there are two main types of monkey breeding: natural mating in captivity and artificial insemination. Natural mating is when two monkeys mate with each other without any human intervention. Artificial insemination, on the other hand, is when monkey sperm is collected and then artificially inserted into the female’s reproductive tract. 
They have a large belly which accounts for a quarter of their body weight. Their digestive system is divided into compartments similar to the cow. They also have colonies of bacteria in their gut to help digest plant material and neutralize leaf toxins.
They have a closed circulatory system, making them able to transport the nutrients, oxygen, and water by blood cells, to where it is needed.

The picture below shows Gray langur, known as black faced monkeys, also called Hanuman langurs and Hanuman monkeys, are Old World monkeys native to the Indian subcontinent constituting the genus Semnopithecus. 

Scientific Classification of Gray langur

Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates                                            Family: Cercopithecidae                          Genus: Semnopithecus                          Species: entellus