I bought a can of food(maybe Wellness) that was Sradines & something else. Twitch wouldn't touch it. Lily sniffed it, picked up the can, walked over to the litter box & dropped it in. I think that was her way of subtely hinting she thought that food was poop!
I give Lily & Twitch a little tuna on top of any dry food or canned food the first time they get a new gflavor & when I am changing foods. Lily doesn't mind red salmon, but Twitch won't eat it. They both love pink salmon. Mom & dad get mad when I feed the cats the last can of their pink salmon!