A hoofed quadruped of the genus Equus; especially, the
   domestic horse (E. caballus), which was domesticated in Egypt and Asia
   at a very early period. It has six broad molars, on each side of each
   jaw, with six incisors, and two canine teeth, both above and below. The
   mares usually have the canine teeth rudimentary or wanting. The horse
   differs from the true asses, in having a long, flowing mane, and the
   tail bushy to the base. Unlike the asses it has callosities, or
   chestnuts, on all its legs. The horse excels in strength, speed,
   docility, courage, and nobleness of character, and is used for drawing,
   carrying, bearing a rider, and like purposes.