If the defect (hole) in the part is small enough or the path length for the leak is long enough, it will be almost impossible for the fluids to flow through the hole (leak). The fluid properties that affect flow are pressure, temperature, and viscosity.
Though the answer seems to be correct, but when taken from that perspective, one will not keep focused on the real reason. The main reason why we shoe horses is for work, which then determines the style and the type of shoeing for the individual working horse. Various types of historical horseshoes.
They are more common in stock horses and tend to detract less from their value than from other types of horses. An important part of selecting a horse is the ability to recognize common unsoundnesses and blemishes and faulty conformation that tends to predispose the animal toward unsoundnesses and blemishes. Some horses become unsound at an early age because of coarse, crooked legs, whereas others remain useful for years.