I had a colt last year that was super athletic. He would run about the pasture spinning, braking, and just having a good time. Then when he got to about three months old his hind legs started to turn inward from the fetlock down. They are still turned inward like that at eight months, and I am wondering what I can do for him. His dam and sire have had a few foals together and I've never had this problem before.