We adopted Bongo (his first name was Hyperion, but he was such a small kitten for such a large name, so Bongo was his nickname because he bounced off the walls). And at our local shelter, you get coupons for items when you adopt. So we got a coupon for a bag of Innova Grain Free cat food. I had been feeding my dog THK for years already, but this cat was more of my boyfriend's cat, and we were a little hesitant because cats are more finicky than dogs, and some reviewers said their cats didn't like the food. He seemed to like the Innova as well... until he saw/smell what the dog was getting! He tried to steal some from the dog's bowl! We quickly went out and purchased the Prowl, which he took to instantly. We tried Grace, and he ate it, but with less gusto. He gets raw meat and organs (like the dog) but THK is definitely our base food. He is an ideal weight, has great teeth, and has a super shiny, glossy, and soft black coat (he had dandruff when we first got him).
Also, neither of my animals are on flea medications (cat is indoor only). But the dog goes out around other dogs who have fleas and he never gets them and never brings them home to the cat. I credit this to their sound health.