What is brio in horse ability?

Brio in the horse world indicates a characteristic of both physical and mental qualities of horses with Spanish origin. Brio literally translates to "controlled fire". Paso Finos and Peruvian Pasos are said to possess varying degrees or amounts of brio because of their fascinatingly fast, flashy, powerful gaits which they are able to maintain for tremendous lengths of time and for their extremely intelligent, yet gentle temperaments.