The Chakrashila Wildlife Sanctuary (CWS) is located under Dhubriand Kokrajhar districts of Assam and covers an area of 45.568 square kilometers. It is famous for the golden langur and is the second protected habitat for golden langur in India. Some species of mammals recorded in this sanctuary are short nosed fruit bat, Indian false vampire, Indian pipistrelle, rhesus macaque, Chinese pangolin, Asiatic jackal, etc.