I was asked the other day by a girl that boards her horse where mine is, if I could put her horse and my horse outside in the pasture and she'd bring them back in at supper time. Her horse is the only one mine will get along with and likewise for hers. This was only the second time that I've ever put her horse outside, first time with her being present. (Btw, her horse is a gorgeous 6 year old 14.2hh Palomino gelding).
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?