The Biligiriranga Hills, also called B R Hills, is a hill range situated in south-eastern Karnataka, at its border with Tamil Nadu in South India. The area is called Biligiriranga Swamy Temple Wildlife Sanctuary or simply BRT Wildlife Sanctuary. The forests form an important wildlife corridor between the Western Ghats and the Eastern Ghats, linking the largest populations of Asian Elephants and tigers in southern India.
Situated thus at the tail end of the eastern Ghats, the BR Hills form a part of the hill ranges that connect the Eastern Ghats with the Western Ghats, with plants and wildlife of both these areas. The forests on the hills support a variety of habitats and thus the wildlife in the area ranges from species known from scrub forests and dryer regions to species that are endemic to wet forests of the Western Ghats.