two rhinoceros

africa african america animal armor baby bicornis burma ceratotherium coating coelodonta dicerorhinini dicerorhinus diceros dicerotini endangered eocene equidae eurasia europe extinct family horned horns horses indricotherium javan javanese keros large mammal miocene mother natural nursing primitive rhino rhinoceros rhinocerotidae rhinocerotini rinos singapore skin sondaicus species sumatran terrestrial unicorn zoo