What is considered a pet? Often the definition of what animals qualify as pets will be laid out in your state and/or local legislature. To me, a pet is something that can be kept at your residence, even if you live in an apartment in a major metropolitan area. Dogs, cats, birds, and some exotic animals fit in this description.
What is a barn yard animal? These are small animals that are usually found in a farmer's yard which legislature usually prevents these animals as being kept as pets in apartments or communities where the lots are small, and your neighbors are close. Chickens, ducks, and rabbits are a few examples.
What is livestock? Most legislature defines bovine, equine, swine, and ovine, of any size or variety whether kept for pleasure, food, or breeding purposes as livestock. So a horse of any kind by definition of law is livestock, regardless of what purpose that horse serves.
To me livestock is any animal that requires more than 1-1 1/2 acres per head. In terms that everyone can kind of grasp, if you lived in New York City, NY, U.S.A. in an apartment that overlooked Central Park, you would have to lease or rent a place to keep a horse 24/7 that makes them livestock. You may treat them like a pet, but that does not change the fact that they are livestock.
Regardless of how you see your horses, the law and law makers see them as livestock, period.
Good luck, happy trails, stay safe, and God bless you and yours.
Until next time,