The white rhinoceros is a mammal belonging to the family Rhinocerotidae in the order Neodactyla. The body is round and robust, the skin is thick and smooth, and the surface of the body is approximately gray; The head has special features, but the incisors and canines have degenerated. The developed 7 pairs of cheek teeth have a very thick layer of limestone; There are two horns, one large and one small, one in front and one behind. The horns are not made of bone, but are derivatives of epithelial tissue, formed by the accumulation of keratin fibers. Distributed in southern and northeastern Africa, mainly active in the morning and evening, and rolling or resting in muddy water at other times; When the weather is cool, they lie under the shade of trees and take a nap, living alone or forming small groups. They are distributed in southern and northeastern Africa and feed on grass.