Collagen Chews are 36 are perfect for medium to XL dogs that are medium to power chewers but still enjoy a long-lasting grass-fed collagen 100% beef chew.99.4% Digestible & 94.8% ProteinLow fat and long lasting chewing powerwBenefits skin and coat & improves joint healthWe do not smoke or add smoky juiceThey are single ingredient, additive free, chemical free and preservative free