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Rhinoceroses are colossal mammals that can be found on the African and Asian continents. They belong to the family Rhinocerotidae, which includes five extant species: the black rhinoceros, the white rhinoceros, the Indian rhinoceros, the Javan rhinoceros, and the Sumatran rhinoceros. The most prominent feature of these animals is their large horns on their snouts, which are made up of keratin, a type of protein found in hair and nails. Rhinoceroses have thick skin to protect themselves from predators, and they can weigh anywhere from 1,300 to 6,600 pounds, depending on the species. As members of the "Enormous Animals" category, rhinoceroses are some of the largest land animals on Earth. They fall under the broader categories of "Large Animals" and "Animals By Size," reflecting their significant size compared to other animals. Within the hierarchy, they can be found in the category "Enormous Animals," which includes all animals that exceed a certain size threshold. The rhinoceroses' massive bodies, distinctive horns, and unique adaptations make them an intriguing addition to this category.