Ok I don't have pictures at the moment if that would help at all. I went out this afternoon and found my horse Sam had a swollen sheath. Just the end of of it has almost doubled in size. I'm not really sure what has happened, I haven't had much chance to do anything with my horses lately other then dayly checks. I don't recall seeing this before except for late this afternoon and it was quite a noticable difference. He didn't seem to mind me fiddling with it. I didn't notice any scratches of anything and it didn't feel any different (if that makes sense) it just looked a lot bigger. I plan to catch him and take a closer look tomorrow morning. Other then that though I am a bit unsure. Its a bit late in the night here to do anything but I was wondering if anyone had any thoughts??