About a year ago, I was out riding. Across a concrete canal maybe 10 feet a pit came running up. We had a hard time getting the horses past and dogs had not been a problem. This dog was acting crazy though and looking for a way across. The guy I was riding with, horse spooked past. I backed off until the owner came and got him. If I had been armed I would have shot him in a heart beat if he managed to jump his bank. Scary. I know some people have good experiences with them but I haven't found one that is right in the head.
Have you ever shot a pistol or rifle while riding your horse? You may get bucked off and the horse will leave you to the dog. Teach your horse about gunfire when you get a chance.