Every pet should have LifeSource Parts, unique kibbing components that provide vitamins and nutrients helping maintain every adult cat safe and happy with all the flavored types with Blue Buffalo Wilderness High Protein Dry Cat foods. Together with vitamins , minerals, good quality simple proteins and several other important elements which really help promote healthy bodies, skin, core, eyes including nutrition, nutritional kibble comprises sweet potatoes from refined carbohydrates, cranberries, blueberries including carrots which contain antioxidants which really maintain an immune system and several other vital items. Cow, duck including fish are part of their tastes. Backpacks of 2.5, 5 , 6, 11 and 12 package sizes are available.