Horse racing regulations lead to fewer equine deaths. Fatalities in California have been cut in half in 2 years and plummeted to the lowest levels since 1990 as a result of reforms implemented after dozens of death at Santa Anita Park in 2019. The reforms in the last two years include strict limitations on use of whips by jockey, a prohibition on most medications before races, installation of new imaging technologies to catch injuries sooner, more opportunities for veterinarians and stewards to sideline horses and a mandatory requirement for trainers to participate in the postmortem.