Why do horse walk on their middle finger?

horses do not have fingers they have a hoof on each foot Answer: The structures of each foot of a horse correspond to the toes and fingers of a human hand or foot. To be in the same position as horse a human would have one toe or finger contacting the ground at the end of each limb and the pressure being supported on one finger or toe nail (this corresponds to the horse's hoof) As to why horses evolved to have feet that look like this we have to look back to very early ancestors of horses such as Condylarth, a dog-sized, five-toed creature that lived about 75 million years ago during the early Eocene period. At that time these horse ancestors had feet that were more like rabbit's feet - toes and claws. As the need to run became more important in their lives ( maybe as they left forests to live in grasslands) the faster animals survived. These individuals probably ran more on their toe tips than flat footed. Subsequent generations improved on this trait until the predecessor of modern horses (Eohippus) ran on just one toe tip with a hard hoof, not a claw to provide protection from the ground.