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Rhinoceros

Rhinocerotidae

Rhinoceroses are large, thick-skinned odd-toed ungulates (order Perissodactyla) in the family Rhinocerotidae. They’re defined by one or two prominent “horns” on the snout—structures that are not true horns but are made primarily of keratin (the same protein found in hair and fingernails) and grow from the skin. There are five living species: two in Africa (white and black rhinos) and three in Asia (greater one-horned/Indian, Javan, and Sumatran).

Rhinoceroses are large, thick-skinned odd-toed ungulates (order Perissodactyla) in the family Rhinocerotidae. They’re defined by one or two prominent “horns” on the snout—structures that are not true horns but are made primarily of keratin (the same protein found in hair and fingernails) and grow from the skin. There are five living species: two in Africa (white and black rhinos) and three in Asia (greater one-horned/Indian, Javan, and Sumatran).