Homemade food

Many pet owners feed cats homemade diets. These diets generally consist of some form of cooked meat or raw meat, ground bone, pureed vegetables, taurine supplements, and other multivitamin supplements. Although cats are naturally resistant to many of the bacteria that raw meats contain, meat can sometimes also contain parasites and other harmful organisms and for this reason raw meat is sometimes frozen for periods of time before being used.[citation needed] Some pet owners use human vitamin supplements, and others use vitamin supplements specifically engineered for cats. Veterinarians sometimes recommend including digestive enzyme supplements in a homemade diet. Some pet food manufacturers offer packaged versions of a raw food diet that closely resembles such homemade diets. These packaged versions are generally kept frozen, with individual portions being thawed in advance.

Source : http://en.wikipedia.org/wiki/Cat_food