My experience is the same as the above posts... my toadstool has a small hole in it right now, and I expect it to eventually drop off a piece of its crown and then I'll have two. I have other leathers that have done this extensively.... At one point, I had 1 very large leather... after seemingly "falling apart," I now have about 6 of them. It looks a little ugly while its happening, but doesn't seem to be a sign of any major problems.