Worked Magic on the lunge in the round pen. I rode him to the arena. We rode the oval and needlepoint exercises. He did good. We started the canter on the circle, left lead, and I rode him for a complete round of the arena. We were not able to get the right lead. What I did not know was that he had lost the right front shoe. I think he lost it while I was riding him. I did not notice it missing when I groomed and tacked. I did not clean his hooves and Mara was there so it is possible that I might not notice a missing shoe. I did notice it when I got off. It is hard to miss since the outside hoof wall is broken about 1/2 inch up from the bottom. Most horses would not break the hoof wall that quickly. While I was riding I did notice that something was a little off on the right front. It was just barley noticeable and he did not noticeably limp after the ride. I would like to get him shod before he bruises the sole. When he was shod 6 weeks and one day ago he had tender feet and was difficult to shoe. Dale only put 3 nails on a side and he usually puts 4.