The Mammals of North East India is a major definitive work, the first such documentation on this global biodiversity hotspot. This small region of India, about the size of UK has mammal diversity equivalent to the entire European continent. NE India has the highest mammalian diversity in India. Covering only 8% of geographic area the region has around 65% of the country's mammalian species diversity. The Mammals of North East India includes an exhaustive list of more than 1600 references.