Most cat food brands have separate recipe foods for kittens, adult cats and senior cats. We are different, because our foods are of the highest quality which makes our foods suitable for all ages. Whilst we add an extra amount of sunflower oil to our kitten wet foods, everything else we make is perfect for kittens, adult cats, and senior cats. Unlike other brands that recommend a gradual transition, you can switch to Thrive cat food immediately, and your cat will love it and thank you forever!