Langur is a type of Old World monkey found in parts of South and Southeast Asia. It is also known as the Hanuman langur, named after the Hindu god Hanuman, who is often depicted with the body of a langur. The Hanuman langur is an arboreal species, meaning it lives in trees, and is known for its long tail and black face. It is an important species in Hindu mythology and is considered sacred by many Hindus.