I'm glad that he's doing well and hopefully he'll gain some of his weight back soon. Storm also had the PU surgery and he was on Royal Canin Urinary S/O formula in both dry and canned. He seemed to like it and I fed everyone this until my RB Starr got very sick and Pearl kept breaking out. I switched vets and I was also seeing a holistic vet and they both said that everyone could eat Innova Evo dry and canned.

With Storm I just have to make sure that he gets plenty of canned mixed with some water. He's now been on this food for at least 2 years or so and he hasn't had any problems. They all love his food and go crazy over the smell of the canned food. I use the 95% Turkey and Chicken kind and I think it even smells good to me. It's very rich so a little goes a long way. Sunny gets his mixed with dry with some water added to it. Maybe Gatsby would like dry food mixed with canned better than just the canned alone. Good luck.