Descended from North African and Spanish stock, caballos de Paso are mid-sized horses bred for sure-footedness and comfort, not for speed. Unlike trotting breeds, Paso horses pace smoothly with little up-and- down movement, resulting in an exceptionally comfortable ride. As a result, they are tough and well-suited to demanding trips into the rough, dry, and expansive western Andes. Today, they are considered the smoothest saddle horses in the world.