Just one ingredient: 100% Bison Lung. Dogs will start their own stampede if it means they can get to these treats quicker. West Paw's Air-Dried Bison Lung Dog Treats are gently air-dried to preserve B vitamins, omega-3 fatty acids, and protein. This technique gives them a chewy but sturdy texture that is still easy to break into smaller snacks. The bison we use are pasture raised and sustainably sourced in the US and Canada and are raised free from antibiotics or hormones.Ingredients: Bison LungGuaranteed AnalysisCrude Protein ......................... 65% min Crude Fat ............................... 15% min Crude Fiber ............................ 5% max Moisture ................................. 19% max Calorie Content: ME (calculated) is 3540 kcal/kg or 8.85 kcal per piece or 2.5 grams.Feeding Guidelines: For supplemental feeding only; not intended to replace a complete and balanced diet. Always introduce new foods gradually to avoid digestive upset. Individual treat size varies, break into smaller pieces to suit your pup's needs. Always provide fresh water for your pet. Store in a cool, dry place.