West Paw | Air-Dried Bison Tripe Dog Treats IN THE CART | UNDER REVIEW One ingredient. Pasture-raised bison. And apparently, pretty stinky. West Paw's Air-Dried Bison Tripe Dog Treats are made with exactly one ingredient: bison tripe. The tripe is air-dried into lightweight pieces that can be served whole or broken into smaller bites for training and treating. West Paw says the bison is pasture-raised, sourced from the U.S. and Canada, and raised without antibiotics or added hormones. And fair warning from West Paw: these are stinky. Your dog will probably consider that a feature. Ingredients Bison Tripe That's it. One ingredient. Why We Put It in the Cart We're liking the simplicity of West Paw's single-ingredient treats, but the sourcing information on this one also caught our attention. West Paw tells us where the bison comes from, how it's raised and exactly what's in the bag. We also like seeing tripe used rather than letting another part of the animal go to waste. One ingredient, transparent sourcing and an easy-to-break treat all look good to us. Now we'll see what the dogs have to say. Product Details Single-ingredient dog treat Made with bison tripe Air-dried Made from pasture-raised bison Bison sourced from the U.S. and Canada West Paw states the bison is raised without antibiotics or added hormones Easy to break into smaller portions Intended for intermittent or supplemental feeding only Guaranteed Analysis Crude Protein: 63% minCrude Fat: 6% minCrude Fiber: 13% maxMoisture: 13% max Calorie Content 3,489 kcal/kg We're leaving the per-piece calorie estimate off for now because the information supplied by West Paw appears inconsistent. At 3,489 kcal/kg, a 5-gram portion calculates to approximately 17.4 calories, not 174 calories. Feeding Guidelines These treats are intended for intermittent or supplemental feeding only and are not intended to replace a complete and balanced diet. Individual pieces vary in size. Break larger pieces into smaller portions as appropriate for your dog. About West Paw West Paw is a Bozeman, Montana company making dog toys, feeding products and treats with an emphasis on thoughtful materials, responsible sourcing and reducing waste. For these treats, West Paw uses pasture-raised bison sourced from the U.S. and Canada and keeps the recipe about as straightforward as it gets: bison tripe and nothing else.