Kim, I'm so sorry to hear that Pouncer's having problems again. It probably is due to stress. I'm pretty sure that Storm's was also due to stress but he also had a very small urethra so it was only a matter of time before he became blocked. Since Storm's surgery, I've been making sure that he gets plenty of water and I've been mixing his dry food in with wet food and adding a little more water. So far so good but I'll know more next month after his urinalysis check up. I think that putting the cats all on the same food is great idea. I sure hope that this will help Pouncer stay healthy. I'm sending prayers and postive thoughts to both you and Pouncer. Please continue to keep us updated about him.