What are horses eaten by?

The horse is a prey animal, and generally today horses are not eaten by anything, unless out in the wild or sold to be slaughtered. If a horse is sold at an auction to be slaughtered the horse is generally of no use to the owner or is too old. Wild horses in the US are usually smart enough to avoid being eaten but foals or injured horses might be attacked by mountain lions/cougars, wolves, and sometimes grizzly or black bears. Domestic horses may also get attacked by such predators.