My weanling (almost a yearling now) colt has done some damage to his hind hoof. He was at the far end of the field in the forest whan I called him, and I heard a tremendous crashing noise just before he came galloping out of the trees. I think he ran into a pile of old branches and downed trees we had piled up when we were cleaning up from winter storms. I inspected him carefully and noticed he has a fairly nasty looking tear in his hoof wall, just below the coronary band. I did not have my camera with me so no pics I'm afraid, but it's a horizontal tear or crack very high up on the hoof, and it looks quite deep. There was no bleeding and he is not limping at all. I left a message for the vet to call me in the morning, and I smeared pine tar over the whole thing (an old folk remedy I remembered from years ago). He is now confined in the round pen for the night. Is there anything else I can do for now? And what should I watch out for as the hoof grows out? Any other tips?