We are thinking it's an infection of some sort. They were concerned it was the kidney's, but the blood work didn't show that. He would kind of give off like he had a hair ball, you would hear some flem, but nothing would come out. They are giving him antibiotics, so hoping that helps. The funny thing is that he was humping the fleece blanket, a lot..haha Something he hasn't done since he was neutered. Poor guy!