Horse hoof

A horse hoof is a structure surrounding the distal phalanx of the 3rd digit (digit III of the basic pentadactyl limb of vertebrates, evolved into a single weight-bearing digit in equids) of each of the four limbs of Equus species, which is covered by complex soft tissue and keratinised (cornified) structures. Since a single digit must bear the full proportion of the animal's weight that is borne by that limb, the hoof is of vital importance to the horse. The phrase "no hoof, no horse" underlines how much the health and the strength of the hoof is crucial for horse soundness.

Hooves in the natural state

Both wild and feral equid hooves have enormous strength and resilience, allowing any gait on any ground. A common example of the feral horse type is the Mustang. The Mustang is, in part, descended from the Iberian horses brought to the Americas by the Spanish, but most herds also have ancestry from other breeds. Therefore, the famous Mustang hoof strength is in part a result of natural selection and environment. Thus, it is proposed that other domestic breeds could develop similar hooves if raised under similar conditions.