I'm so sorry to hear about Tigger's passing. If it was the food then that's even more heartbreaking. I used to feed my Storm Royal Canin Urinary S/O formula in dry and canned but now all of my cats are on Innova Evo. This food has improved Storm's health so much and it's grain free. Veterinary diets aren't always the best ones.

Now Tigger is pain free and playing up at Rainbow Bridge. I'm sure that both my Starr and Pepper have welcomed him and are showing him around. RIP sweet Tigger.