Why does my horse anticipate the cattle work?

Anticipation of the cattle work — the horse beginning to get excited, tense, or hard to manage before the cattle are even released, or breaking its reining pattern because it is mentally preparing for the cattle phase before the reining is complete — is a training pattern problem that reflects the horse having learned to predict the cattle work from environmental cues rather than waiting for a specific signal that the cattle phase is beginning. In competition, a horse that anticipates the cattle work will often show its best reining performance in practice when there is no cattle work following it, and its worst reining performance in the show pen where the cattle work is imminent — the anticipation interferes with the concentration and responsiveness the reining phase requires. The pattern typically develops from training sessions in which the cattle work consistently follows the reining work in the same sequence, teaching the horse that the reining is simply a preliminary that ends with the cattle. Breaking the anticipation pattern requires disrupting the predictability: ending sessions after the reining without any cattle work sometimes, doing cattle work without reining work sometimes, doing reining work in a different environment or at a different time than cattle work, and varying the sequence sufficiently that the horse cannot predict from context that cattle work is imminent. A horse with strong anticipation may also benefit from periods of training in which the cattle work is temporarily removed from the program entirely while the reining work is confirmed independently, then reintroduced gradually with varied sequencing that prevents the horse from re-establishing the anticipatory connection between the reining and cattle phases.