This week I noticed rings around my pony's hooves. I dontknow why I didnt notice them earlier because they start at the coronet band and extend about a third of the way down. She is not lame and ther is no heat in them that I felt. She is fat (probably condition score of 4) so I am always worried she will founder. She has a round bale 24/7 and most of the time, pretty short grass because the pastures are always overgrazed (i board). She gets literally only a handful of grain when her pasture mates are feed. I am tryingto think what is causing them. About 4 months ago I started her on a supplement for "hay fed only" horses and also garlic (for flies). Could that be it? How long does it take from insult to ring to appear? I will try to get pictures tomorrow.