Yes, horses can get dizzy when they spin, particularly during the learning phase of high-speed maneuvers like the "reining spin." In 2026, equine researchers and trainers note that while horses have a highly developed vestibular system (the balance center in the inner ear), rapid and repeated rotations can cause them to lose their "rhythm" and sway upon stopping. If a horse is pushed to spin too many times in one direction during practice, they may show visible signs of disorientation, such as a staggered stance or "weaving." Interestingly, professional "reining" horses that have been trained for years develop a physiological tolerance to this motion, much like figure skaters or dancers; they learn to coordinate their eye movements and head position to minimize the dizzying effects. For 2026 riders, the "rule of thumb" is to limit high-speed spins in practice to avoid making the horse feel "seasick" or causing them to fall.