Odd-toed Ungulates

Members of the order Perissodactyla, otherwise known as odd-toed ungulates, are mammals characterized by an odd number of toes and by hindgut fermentation with somewhat simple stomachs. Perissodactyla comes from the Ancient Greek περισσός (perissós, “uneven”) + δάκτυλος (dáktulos, “a finger, toe”). Unlike the even-toed ungulates, they digest plant cellulose in their intestines rather than in one or more stomach chambers. The order includes three extant families: Equidae (horses, asses, and zebras), Rhinocerotidae (rhinoceroses), and Tapiridae...