As I was leading her horse outside, I noticed that he was tossing his head a lot and was completely ignoring me. I yanked a little bit on his lead rope and asked him to stop. How did he respond? By rearing up all the way in my face. I backed out of the way of his hooves and he reared again. He did this about 5 more times and each time he was getting closer to me because he doesn't know a lot about personal space because his owner just lets him do whatever, but I am obviously not comfortable with a horse rearing right up in my face. Anyone know what could have caused this behavior? Was he just being a brat?