Ultimate Ungulate Page: Perissodactyla Ultimate Ungulate Page: Perissodactyla: Taxonomy of the order of horses, zebras, tapirs and rhinoceroses, with biological descriptions of many individual species. (Perissodactyla) http://www.ultimateungulate.com/perissodactyla.html
Animals with Odd-Numbered Hooves Animals with Odd-Numbered Hooves: Information, photos and videos of horses, zebra, rhinoceros and other odd-toed ungulates. (Perissodactyla) http://www.thebigzoo.com/zoo/Perissodactyla.asp
Additional
Information: Includes some of the mammals with hooves.
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