Wallachee Horses have different forms of protection. First, they travel in herds. Second, they're the fastest land animal on the planet. If the predator that's chasing it gets next to it, it can get blinded by a pair of visors on either side of the neck. These visors reflect light from the sun. If the animal is right behind it, spurs on the ankles can kill with only one kick to the head.
Wallachees are very useful to the Wallachee tribe. They help them travel far distances, win many wars, chase animals they're hunting (of course the horses are herbivores), and carry large loads of stones and plants.