I took my cat to the vet, because he was losing fur and has a small bald spot near tail. The vet drew some blood and did a scraping and a few tests. The bill was only $60 not bad considering it is a vet bill. Anyhow nothing irregular showed up in tests. Phew good no buying medicine for my cat. However he thought it was diet related and recommended a couple choices in cat food. Neither was extremely more expensive than what i curently spend to feed my beast so I tried. One food made my cat vomet all over the place. He did it on my sofa three times, my bed twice, and all over my bathroom rug ruining it. So I discontined it and threw it away. The secound one he wouldn't eat for nothing he would tip over the dish and try burrying it. So I guess I'll just go back to feeding him what he was eating and have a cat with a bald spot on his butt.