A female rhino is called a cow, while a male is called a bull and a young rhino is a calf. A group of rhinos is called a crash. The word rhino is an abbreviated version of rhinoceros.
Rhinoceros are animals from the family Rhinocerotidae. There are five species of rhinoceros in the world; two of these species are native to Africa and two are native to South Asia. These animals are known for their large size, plant-eating diet and thick, protective skin. Rhinos are mammals with relatively small brains and large horns. They are capable of reaching a weight of 1 ton or heavier.