Can legal actions be brought against a farrier by a horse owner? Sure they can. As your insurance company might say, people can sue for just about anything. Most people will never need to deal with this, but it’s still not a bad idea to be on guard.
In a farrier’s business, reputation-building is a major part of success. Winning a client’s confidence can mean they feel comfortable taking an interest in your work and are comfortable asking questions. That kind of rapport is often what keeps a client for life.