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The black rhinoceros, black rhino or hook-lipped rhinoceros (Diceros bicornis) is a species of rhinoceros, native to eastern and southern Africa. Although the species is referred to as black, its colours vary from brown to grey. It is the only extant species of the genus Diceros. Order: Perissodactyla > Family: Rhinocerotidae > Genus: Diceros > Species: Diceros bicornis