A legal determination that horses are inherently dangerous. By nature, the horse is a herd animal with its natural pecking order. Hopefully, as a horse handler, you are at the top of that pecking order. If you are below the horse, your chance of injury is greater. Horses are not very bright.
Horses are creatures who's primary means of defense is flight.
They have blind spots immediately in front, and behind them. They have a cone of blindness about six feet in front and behind. Stay out of this area when possible. Horses have no conscience. There is much dissent about this.