According to veterinarians Dr. Foster and Dr. Smith, high-quality cat food can be identified by the ingredient list on the back of the package. Quality brands feature high-protein ingredients such as meat or fish as the first few ingredients and include amino acids such as taurine and arginine.
Premium cat foods found in specialty pet stores are usually higher quality than grocery store cat foods. Grocery store cat foods include indigestible fillers such as corn and wheat, causing the cat to eat more and feel less full. Premium foods include a higher protein content and higher-grade ingredients for overall better quality.