While the habitat a rhinoceros needs varies by species, both black and white rhinos live in the African grasslands and floodplains. Other rhinoceroses live in swamps and rain forests, with the greater one-horned rhino living in India and Nepal while the Javan and Sumatran rhinos live in Malaysia and Indonesia.
Rhinos are large animals, ranging in size from the Sumatran, which weighs over 1,700 pounds as an adult, to the white rhino, which weighs about 5,000 pounds. These herbivorous animals eat most of the day and night, sleeping only during the hottest part of the day. They use mud baths for relaxing, to keep insects away and as a natural way to prevent sunburn.
Most rhinos are solitary, but they occasionally form groups that include a mother and her offspring. A male rhino usually rules over an area, but allows a few males to reside there too. Females have the freedom of roaming from one area to another.
As of 2015, black, Sumatran and Javan rhinos are critically endangered species. Greater one-horned rhinos are vulnerable and white rhinos are near threatened, with fewer than six wild northern white rhinos left in the world. Threats to the rhino population include the hunting the animals for their horns and the loss of habitat.