A White Rhino.
Perissodactyla is an order from the Mammalia class. The middle toe on each hoof is usually larger than its neighbours.
The living perissodactyls are a diverse group. At one extreme are the lithe and graceful horses; on another, the huge, tank-like rhinoceroses; and in the middle, the vaguely pig-like tapirs. All extant perissodactyls are large, from the 180-kg Mountain Tapir to the 2,300-kg White Rhinoceros.