How do wild horses keep care, maintenance of their hooves?

As Lorri said, they do it by moving a lot. Generally they average about 18 miles a day foraging for food and water. However, the way the hooves look and function depends greatly on the terrain they are traveling over. read more

Horses in the wild naturally trim their feet. They travel long distances for food and water. They run from predators, and they play. All of this activity naturally wears the hooves down. Their hooves get trimmed from the rocks. read more

Horseshoes exist because when a human rides a horse, the extra weight increases the wear on their hooves; so a horseshoe takes the wear instead of the horse's hoof. If a horse doesn't get a chance to move around normally, it's hooves keep growing, but aren't being worn down, and so there are problems. read more

In domestication horses need their hooves trimmed to keep them a proper shape to avoid lameness. In the wild horses 'trim' their own hooves by walking on rough ground which wears them down. read more