As a general rule, you want to feed your cat wet or canned food because it provides extra moisture that dry cat food cannot. However if you cannot find wet cat food that your cat wants to eat or simply decide to buy only dry cat food, you need to examine dry cat food carefully.
Some dry cat foods use grain as their main ingredient so check to see what the main ingredient might be. Second, check the protein content since cats need plenty of protein. Basically, read the ingredients and the nutritional content to make sure you’re buying the best cat food for your pet.