Read Your Mount
Even the best horses sometimes spook, and many times it's hard to know what scared them. Usually a horse will give you a signal that it is edgy. If it lifts its head suddenly, lays its ears back, lowers its body, or snorts, you need to be prepared. Sit deep in the saddle, have a firm grip on the reins, and be ready for sudden movement. If the horse starts to run or buck, pull one rein hard to bring its nose to your knee.