Cats can have apples safely, but only in small, moderate amounts and without the seeds, stem, or leaves. The flesh and skin of apples are generally safe for cats to eat and can provide some vitamins and fiber. However, since cats are obligate carnivores, apples are not necessary in their diet and should only be a rare treat. Apple seeds contain cyanide and are toxic, so they must be completely removed before offering any apple to a cat. Cooked apples without added sugar or spices are also safe, while dried or candy apples are not recommended due to high sugar content or harmful ingredients. Applesauce should be homemade and plain if given at all. Kittens can eat apples with the same precautions but need a nutritionally complete diet primarily composed of animal protein. Cats lack taste receptors for sweetness, so they usually are not very interested in apples, but some cats might enjoy the texture and moisture. In summary, cats can eat small pieces of apple flesh safely if properly prepared, but apples should not replace their main diet or be given in large quantities.