My horse cut himself out in pasture about three days ago. He cut his left front leg, above four inches above the knee. It wasn't a serious cut. It was a fine cut, about two inches long. His leg seemed fine, but I went to check on him today, and the part between the knee and the fetlock is swollen. He is not lame at all, but it is swollen. It doesn't seem to bother him as I can touch it and he doesn't care. I gave him some bute and I hosed it with cold water. Is there anything else I should do? Or should I just keep doing the cold water treatment?