A thoroughbred racehorse is born, trained, and running by the time it is two or three years old. But what many may not realize is that a thoroughbred’s natural lifespan can easily stretch to 30 years. As owners, trainers, and track operators, we may only hold the reins for a fraction of these horses’ lives, but our responsibility for their welfare does not end when their racing careers do. When a horse breaks from the gate at Saratoga or Belmont…