A rhinoceros, commonly abbreviated to rhino, is a member of any of the five extant species of odd-toed ungulates in the family Rhinocerotidae; it can also refer to a member of any of the extinct species of the superfamily Rhinocerotoidea. Two of the extant species are native to Africa, and three to South and Southeast Asia.
The white rhinoceros is actually grey.
The black rhinoceros has a beak shaped lip and is similar in color to the white rhinoceros.
The Indian rhinoceros has a single horn.
Smaller in size than the Indian rhinoceros, the Javan rhinoceros also has a single horn.
Perissodactyla is an order of ungulates. The order includes about 17 living species divided into three families: Equidae, Rhinocerotidae (rhinoceroses), and Tapiridae (tapirs). They typically have reduced the weight-bearing toes to three or one of the five original toes, though tapirs retain four toes on their front feet. The nonweight-bearing toes are either present, absent, vestigial, or positioned posteriorly. By contrast, artiodactyls bear most of their weight equally on four or two of the five toes: their third and fourth toes. Another difference between the two is that perissodactyls digest plant cellulose in their intestines, rather than in one or more stomach chambers as artiodactyls, with the exception of Suina, do.
Perissodactyla
The white rhinoceros is the largest living perissodactyl
Seven figures showing the bones, blood vessels, ligaments and arteries of the hoof and pastern.
Tapirs are the only extant group of perissodactyls with a trunk.
