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Rhinoceroses

Rhinoceros
Temporal range: Eocene–Recent
Diceros bicornis.jpg
A Black rhinoceros (Diceros bicornis) at the Saint Louis Zoo.
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Class: Mammalia
Order: Perissodactyla
Superfamily: Rhinocerotoidea
Family: Rhinocerotidae
Gray, 1820
Extant genera

Ceratotherium
Dicerorhinus
Diceros
Rhinoceros
Extinct genera, see text

Rhinocerotidae distribution map.png
Rhinoceros range

Ceratotherium
Dicerorhinus
Diceros
Rhinoceros
Extinct genera, see text

A rhinoceros (/rˈnɒsərəs/, meaning "nose horn"), often abbreviated to rhino, is one of any five extant species of odd-toed ungulates in the family Rhinocerotidae, as well as any of the numerous extinct species. Two of these extant species are native to Africa and three to Southern Asia.

Members of the rhinoceros family are characterized by their large size (they are some of the largest remaining megafauna, with all of the species able to reach one tonne or more in weight); as well as by an herbivorous diet; a thick protective skin, 1.5–5 cm thick, formed from layers of collagen positioned in a lattice structure; relatively small brains for mammals this size (400–600 g); and a large horn. They generally eat leafy material, although their ability to ferment food in their hindgut allows them to subsist on more fibrous plant matter, if necessary. Unlike other perissodactyls, the two African species of rhinoceros lack teeth at the front of their mouths, relying instead on their lips to pluck food.


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Wikipedia

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