Rhinoceros

Rhinoceroses are large herbivorous mammals with thick skin, sturdy bodies and one or two horns on the snout. Living species occur in Africa and Asia. Their horns are made of keratin, the same type of material found in hair and nails. Some species crop grasses with broad lips, while others browse leaves and shoots. Mud wallows help protect the skin and provide relief from heat. Their sense of smell is especially useful for locating food and detecting other animals.