“These are my top choices of quality canned food for maintenance in cats (for adult cats). Any of them could form a sound basis for your cat’s diet, or you could do as I suggest, and rotate brands and formulas. Several of these foods contain brown rice or other grains. I prefer a grain-free diet for my own cats because of their ages and health issues. Younger cats in good health could likely eat such foods on occasion, but rotating to non-grain varieties would still be advised. Also, many of the foods have other high carbohydrate ingredients, such as sweet potatoes or pumpkin. While there are nutritional reasons to add these ingredients, they may not be advisable for diabetic cats.”