Class - Mammalia

Order - Perissodactyla

This order is comprised of odd-toed hoofed mammals including horses, rhinos, and tapirs. In past geologic times its members were made more numerous and widespread than they are today.

Family - Equidae

This family contains seven species including horses, zebras, and wild asses.

Genus, Species - Equus Caballus

There are at least 111 recognized breeds of domesticated horses including thoroughbreds, Suffolks, quarterhorses, Arabians, and Clydesdales.