One of the worst things you can do for any cat is feed them dry cat food. Listed below are three web sites picked at random that give you insights into feeding cats raw food.

http://www.felinefuture.com/

http://www.blakkatz.com/dryfood.html

http://www.lowcarbluxury.com/atkins-cats.html

You can do your own searches as well.
Contrary to popular belief dry food is bad for cats' teeth because it does contain a lot of grain thereby causing tooth decay. This also applies to dogs. Also since cats do not like to drink much water, the dry cat food, which is travelling slowly through their digestive tract (because cats digestive tracts cannot handle grains), expands to a point where it can cause blockages (this happened to my younger cat and I had to take him to a vet to clear it). Now I feed my cats only canned and raw food. Canned because sometimes I can't get to the holistic veterinarian to buy the raw food. The raw food contains nutritional bone meal, ground bones, organ meats and other nutrients that usually comprise a cat's natural diet. With the exception of pork, all meats, poultry, etc and raw egg yolks can be fed to cats without worrying about them getting any diseases. Their stomach acids and enzymes will kill any bacteria that can be found in the food they eat. That's how they evolved.