Natural History of the Mammalia of India and Ceylon

Order Ungulata

These are animals which possess hoofs; and are divided into two sub-orders—those that have an odd number of toes on the hind-foot, such as the horse, tapir, and rhinoceros, being termed the Perissodactyla; and the others, with an even number of toes, such as the pig, sheep, ox, deer, &c., the Artiodactyla; both words being taken from the Greek perissos and artios, uneven or overmuch, and even; and daktulos, a finger or toe. We begin with the uneven-toed group.