On Jan. 9, 2025, a Thoroughbred mare named Kayseri was euthanized in Puerto Rico. She had no joint space left in her fetlocks. Her body was broken down from overuse, her mind likely exhausted from pain and confinement. Her death is not only a tragedy--it is the subject of three formal complaints now filed against the Puerto Rico Racing Commission, the track veterinarians, and her final owner. Kayseri was not a forgotten horse. She was bred by the University of Kentucky. She raced under Hall of Famer Mark Casse. She...