How much tin food should a cat have?
The general rule is one 5.5 ounce can per day, per cat. The can should be divided into two feedings: half a can for the morning feeding, and the other half for the evening feeding. Your cat may need more food than that, so it would be a great idea to give him some dry food to snack on between meals. Innova/Evo brand dry food is the best dry food, in my opinion. It is a high-quality, grain-free dry food, and it makes their coats super-shiny and soft.
Also, if you can afford it, it would be a good idea to give your cat high-quality wet food as well. Most supermarket brands -- such as Purina, Friskies, Whiskas, Fancy Feast, Tender Vittles, etc., etc. -- are made with extremely low-quality "meat." It is actually really disgusting. These brands are made with all the leftover animal parts, including ground-up chicken beaks and feet, cow eyeballs, intestines, and something called "Animal Digest." Animal digest is essentially a mishmash of leftover parts; it can include rats, roadkill animals, and animals that were euthanized at animal shelters -- including dogs and cats.That's right, cats. These brands also include something called "ash," which is burnt animal remains. It is absolutely revolting.
Luckily, there are better foods available, made with high-quality meat that is fit for human consumption. They are more expensive than supermarket brands -- up to $2 a can -- but they will keep your cat healthy, and will add years to his life. It is well worth the money to keep your beloved pet healthy and happy. And in fact, you will most likely save money in the long run: since better cat food means a healthier cat, you will save hundreds, even thousands of dollars on veterinary bills.
High-quality cat food brands are sold at most pet stores, including Petco, Pet Stop, and petnetdirect.com. Some high-quality brand names include: Innova/Evo, Weruva, Max Cat, PetGuard, California Natural, Instinct, Prairie, Natural Balance, Solid Gold, Merrick, Wellness, Eagle Pack, Newman's Own, WYSONG, Precise, etc., etc.
If you really cannot afford to buy this food for your cats, then Iams brand is an acceptable second-choice. Iams is a supermarket brand, but it is of a higher quality than most supermarket brands. It's not as good as Innova/Evo, Weruva, Max Cat, etc., etc., but it is better than the other supermarket brands.