Hanuman Langur is believed to be one of the Old World monkeys, belonging to the Semnopithecus Genus. They comprise of 15 subspecies and are terrestrial in nature. Earlier hanuman langurs were believed to comprise of a single species. However, now they are recognized as seven distinct species. Hanuman langur is also known by the name of Gray Langur, Entellus Langur and Common Indian Langur.