We just bought him a little over 2 months ago. He was alright then, but we had to use a tie down to keep his head down to make him behave. Before that he ran off with me and the whole nine yards. Now that has almost no effect on him! He's 6 years old, going on 7 this spring. The vet said everything physically with him is perfect. We're looking into trainers, although I'm not happy with the whole shelling out of $750 thing... But it looks like if I want to keep him I'm going to have to.