My kitty has a gallbladder that does not function, discovered during exploratory surgery. The vet said this week that he needs a diet low in fat because he is less able to digest them without a gallbladder. So I've been perusing cat foods online and in my local pet store, and the foods that are low fat are for weight maintenance. Right now he is bones so I don't want weight management food, For Heaven's Sake. And I think that's why his vet had no recommendations. Any ideas? His preference is dry food. Thank you.