Black Rhino (Diceros bicornis) – Native to Africa, one subspecies of this critically endangered rhino was declared extinct in 2011.
White Rhino (Ceratotherium simum) – Also native to Africa, the southern subspecies is considered "Near Threatened" by the IUCN, but it's northern cousin is believed to be extinct in the wild.
Indian Rhino (Rhinoceros unicornis) – A few thousand Indian rhinos still browse the foothills of the Himalayas. The species once ranged over the most of the north of the subcontinent.
Javan Rhino (Rhinoceros sondaicus) – The Javan rhino once lived in most of Southeast Asia, as far north as China. But after a remnant population in Vietnam was wiped out, the last toehold of the species is a tiny peninsula on Java in Indonesia.
Sumatran Rhino (Dicerorhinus sumatrensis) – Another Southeast Asian species which now exists only in a few isolated pockets. The rhino clings to life on the Malay Peninsula, Sumatra and Borneo.
IMAGE: White rhineceros, Ceratotherium simum, in Lion County Safari, Florida. (Duncan Rawlinson, Wikimedia Commons)