Galiceno Horse or Galiceño. The Galiceno is a horse breed developed in Mexico, bred from horses brought from Spain by Hernán Cortés and other conquistadors. Although small in stature, they are generally considered a horse, rather than a pony, and are always solid-colored. In Mexico, they are an all-around horse, used for riding, packing and light draft. In the United States they are often used as mounts for younger competitors, although they are also found competing in Western events.