What is the canter pirouette and how is it developed?

The canter pirouette is a movement in which the horse executes a 360-degree turn in the canter with its hindquarters remaining approximately in place as the pivot point while the forehand moves around them in a circle — a movement that represents the maximum expression of collection in the canter, combining the highest degree of hindquarter carrying engagement with the lateral flexibility of the most advanced lateral work. The pirouette's technical requirements are specific: the horse should maintain the canter's three-beat rhythm throughout the turn, the inside hind leg should remain as close to one spot as possible while continuing to actively mark the canter rhythm, the horse should be bent in the direction of the turn, and the forehand should move smoothly and evenly around the stationary hindquarters. The pirouette is scored on the regularity of the canter rhythm through the turn — a four-beat canter in the pirouette is a significant fault — the size of the circle the hind legs mark — smaller is better, ideally with the hind feet returning to approximately the same footfall on each stride — and the overall expression and quality of the movement. Development begins with work-in-hand and under saddle exercises that develop the extreme collection and lateral suppleness the pirouette requires: travers on a progressively smaller circle, canter half-passes with increasing angle, and eventually turns on the haunches in walk that develop the horse's understanding of the movement before canter demands are added. The pirouette is typically first attempted from collected canter on a small ten-meter circle, gradually reducing the size of the turn until a true pirouette emerges — a process that may take months of careful development because the physical demands of the pirouette require a degree of collection that cannot be rushed.