My boyfriend and I are in the market for a new horse. We went to look at one today and saw this. We were really interested until we noticed it. He's 3 going on 4 years old, and all of his other hooves are chipping as well. He's stalled all the time and when he does get turned out its in a rocky pasture. So my question to everyone is, is this pretty serious? I know its bad, but is it something that is going to heal up, will it take a while to heal, or will it heal and then reoccur easily? Thanks for the help!!