The Horse Is a Fighter

…The horse is also a fighter, unlike many other herd animals and antelopes and deer, their wild distant relations. These animals rely on their numbers for protection, but individual horses defend themselves vigorously against attacks by predators: wolves, mountain lions, and even cheetahs. This is especially true of stallions and mares with foals. For a prey animal, the horse packs quite a kick and delivers a dangerous bite….

— Raiders, Rulers, and Traders, Chapter 1