The horse was not called a Eohippus when it had multiple toes.
Horses have a great sense of balance, due partly to their ability to feel their footing and partly to highly developed proprioceptionthe unconscious sense of where the body and limbs are at all times
 In the past, this order contained 14 families, but only threeEquidae (the horse and related species), Tapiridae (the tapir), and Rhinocerotidae (the rhinoceroses)have survived to the present day

