Indian rhinos are solitary except when calves accompany their mothers (5). A calf remains with its mother until the birth of the next calf (6), when it is chased away (5). Females reach sexual maturity between five and seven years of age and give birth to a single calf about once every three years (4). Males tolerate intruders in their range except during the breeding season when fights over females can be fierce, and may even end in death where population densities are high (5). These rhinos are grazers, feeding preferentially on tall grasses, although they also eat other vegetation including leaves, fruit and aquatic plants. They feed in the cool of the evening or early morning. The prehensile lip is used to pluck at grass stems (5). The Indian rhino is more aquatic than most other rhinoceros species, readily swimming and wading (7).