The Indian rhinoceros (Rhinoceros unicornis), also called the greater one-horned rhinoceros and Indian one-horned rhinoceros, belongs to the Rhinocerotidae family. Listed as a vulnerable species, the large mammal is primarily found in north-eastern India's Assam and in protected areas in the Terai of Nepal, where populations are confined to the riverine grasslands in the foothills of the Himalayas.
The Indian rhinoceros once ranged throughout the entire stretch of the Indo-Gangetic Plain, but excessive hunting reduced the natural habitat drastically. Today, about 3,000 rhinos live in the wild, 2,000 of which are found in India's Assam alone.
It is the fifth largest land animal.