How does the stop in cow horse differ from a reining stop?

The fundamental mechanics of the stop in working cow horse are the same as in reining — the horse drives its hindquarters under its body, elevates its back, lowers its hip, and slides to a halt from the seat cue — but the context in which the stop must be executed and the demands placed on it in cattle work make it a more athletically complex skill than the reining stop alone. In reining, the stop is asked from a controlled rundown in a straight line on a prepared surface at a predictable moment, allowing both horse and rider to set up for it systematically. In cattle work, the stop is often asked from angles and positions dictated by the cow's movement rather than the rider's preference, from speeds that vary with the cow's pace, and at moments determined by the action rather than by a planned setup. The stop must also be deep and correct enough that the horse can immediately transition from the slide into the rollback of the fence turn, which means that a stop that is merely adequate in reining — stopping in a reasonable distance with some brace — is insufficient for the demands of fence work where the quality of the stop directly determines the quality of the turn that follows. The cow horse's stop must therefore be genuinely confirmed and athletic, installed deeply enough that it holds under the excitement and distraction of cattle work and from positions that are less ideal than a straight reining rundown, which is why the reining stop is developed to a standard well above what the competition reining phase alone would require.