Just one ingredient. 100% Bison Lung that's gently air-dried to preserve B vitamins, omega-3 fatty acids, and protein. Dogs will start their own stampede if it means they can get to these treats quicker. Our Air-Dried Bison Lung Dog Treats are nutrient dense and easy to break into smaller snacks. Features Ingredients: Beef Lung Nutrition: Lung is a low-fat, high-protein treat that supports muscle development and energy in dogs. It's also rich in essential nutrients like iron, folate, B12 and C. Specs Crude Protein: 62% min Crude Fat: 13% min Crude Fiber: 3% max Moisture: 20% max Calorie Content: ME (calculated) is 3840 kcal/kg or approximately 19 kcal per piece or 5 grams Additional Details: Feeding Guidelines: These treats are intended for intermittent or supplemental feeding only. Individual treat size varies, break into smaller pieces to suit your needs.