William Thomas Riddle, DVM, 74, husband of Margaret Alexander Riddle, passed away at home on Sunday, September 20, 2026, surrounded by his family. He was born in Greenville, SC, on June 7, 1952, to the late Herbert Earle and Anne Newby Riddle.
Tom and Margaret met while working at Spendthrift Farm and married in 1981. In 1982, Tom partnered with Dr. William Rood to found the world-renowned Rood and Riddle Equine Hospital. Tom was an internationally recognized authority on equine reproductive medicine and was honored with numerous awards and distinctions, including serving as president of the Kentucky Association of Equine Practitioners, the Society for Theriogenology, and the Theriogenology Foundation, and receiving the Steiner Award for Excellence in the Practice of Theriogenology, the Friend of University of Kentucky Ag Equine Programs, UGA College of Veterinary Medicine Dean’s Distinguished Service Award, and the Distinguished Educator–Mentor Award from the American Association of Equine Practitioners. […]