Where to buy grain-free cat food? Grain-free cat food has become increasingly popular over the past year, so more and more brands have started selling it. Grain-free does not mean it is immediately healthy, by the way: always check the ingredient list to see what is in the food. WE MORE TIPS Featured • Cat When do you choose cat food specifically for kidneys? Featured • Cat How do you store a large pack of cat food? Featured • Cat Is canned cat food better?