Glossary
Rhinoceros Rhino With Three Toes
Rhinoceros Toes

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Perissodactyl
Having an odd number of digits (fingers, toes).
The order Perissodactyla includes mammals that stand on an odd number of toes, usually one toe or hoof.
For example, horses stand on one digit, rhinoceroses on three.
Cf. artiodactyl
Horses' Hooves