In Castile, with its large open spaces, the hare must travel greater distances in search of food and its only defense being away from cover are its legs, lungs and heart. This type of land and hare promotes another type of Galgo with a hard foot, deeper chest, longer and flatter muscling, ultimately a Galgo with greater endurance. These Galgos are heavier and are more attractive, and in fact have been considered purer of race, necessary for the preservation of the breed.