Only 18% of the total area of India is under forests are much more restricted in extent. According to accepted norm for ecological health of a country it should have a forest cover of about 33% of its. Other animals, in the category of mammal, include Indian bison, Indian buffalo, nilgai, chausingha (four-horned antelope), black buck (Indian antelope), gazel and deer. Deer are of several types such as Kashmir stag, swamp deer, spotted deer, musk deer and mouse deer.