I am really concerned about Dee. His hoof does not look right at all to me. Two days ago, I noticed that a corner of his frog was "peeling" (can't think of another word to describe it) and these pictures are what it looked like yesterday: The first day I noticed it, I contacted my farrier immediately. He said not to worry and it was just the frog shedding. Once I noticed that nearly the entire frog is shedding at once, I had him look at it and he again said it was just the frog shedding and not to worry. Dee isn't lame on it, but it seemed sensitive when I was picking out his feet. Normally I trust my farrier 100% but this has me really concerned. One of my horsey friends said the whole frog could be shedding at once due to lack of nutrition, so we are re-evaluating his diet. I have another well known local barefoot farrier stopping by to take a look at his feet but I am already in panic mode. Just for reference, this is his current hoof angle trimmed by my current farrier which my horsey friend said isn't ideal - but this is how Dee's hooves were trimmed when I bought him too. What do you think? What should I do?