Elephant Safari at Kaziranga Assam India, single horn rhino rhinoceros sighted in wetlands and grasslands. rhino is the source for restocking Kaziranga , it weighs over 2 tonnes (adult male) skin is thick and its colour is brown with pink shin folds and hairless apart from eyelashes, ear fringes, tail,...Eukaryota domain. rhino grazing mainly grass, twigs, leaves, and aquatic plants are seen. Rhinoceros name used by Carl Linnaeus. bulls are solitary, and groups are cows with calves and sub-adults are active in the morning, bathe regularly, and are good swimmers mostly invulnerable to predation.