Blue Buffalo® Tastefuls™ Savory Singles Adult Cat Food - Natural, Tuna. Help your cat stay happy and healthy with Blue Buffalo® Tastefuls™ Savory Singles Adult Cat Food. This convenient twin-pack features tender cuts of real tuna in a savory gravy. Each 2.6 oz pack provides two perfectly portioned servings, so you don't have to worry about storing leftovers. This natural cat food is enhanced with vitamins and minerals and contains no chicken (or poultry) by-product meals, corn, soy, wheat, or artificial flavors and preservatives. For daily feeding, it's recommended to serve 2 servings per 6 lbs of body weight.