Made for adult cats, this Wilderness Rocky Mountain Formula with Trout provides your cat with a higher concentration of the meat she loves - without grains that contain gluten. Formulated by Blue Buffalo's animal nutritionists, BLUE Wildernss Rocky Mountain recipe contains protein-rich deboned trout, no grains that contain glutens, antioxidant-rich fruits and vegetables, NO chicken (or poultry) by-product meals, NO corn, wheat, soy, and NO artificial preservatives. BLUE LifeSource Bits are a precise blend of antioxidants, vitamins, and minerals selected by holistic veterinarians and animal nutritionists that support immune system health, life stage requirements, and a healthy oxidative balance. LifeSource Bits are "cold-formed" to help retain the potency of their ingredients which means Blue Buffalo minimizes the amount of heat that LifeSource Bits are exposed to during the manufacturing process. It's the same concept as when you cook vegetables at a high heat - the longer you do, the more heat-sensitive nutrients are lost. Feeding Guidelines: 5-9 lbs : 1/4 - 1/2 cup10 - 14 lbs : 1/2 - 3/4 cupOver 14 lbs : Feed to desired breed weight and conformation | Blue Buffalo Wilderness Rocky Mountain Recipe with Trout Dry Cat Food | Size 4 lbs