Is it illegal to feed wild horses?

Yes, feeding wild horses is prohibited by law in most states they live in. Over the years several horses have died as a result of being fed by humans. Even food that domestic horses can usually tolerate, like apples and carrots, can be harmful to the wild horses. When they ingest apples, carrots, or other non-native foods, they are at great risk for painful colic at best and death at the worst.