· Long-Lasting Dog Chews - These tough, durable bully sticks with collagen sticks for dogs are designed for aggressive chewers, or dogs who could benefit long-lasting dog treats between meals.· No Need for Additional Collagen Supplements - With this chew, dogs can enjoy the bully sticks they love with the additional benefits of collagen. Plus, these beef dog chews promote healthy gums and aid in maintaining strong joints, skin, and coat.· Smoked for Maximum Flavor - Hickory smoked to enhance the natural beef flavor, these bully sticks with collagen core are an irresistible, smoky treat dogs love.· Healthy and 100% Natural Collagen for Dogs - These beef dog treats are made from free-range, grass-fed beef. The center is beef collagen, which is wrapped in beef bully sticks. We use no artificial preservatives, fillers, or additives.· Easily Digestible - A safer choice than traditional rawhide, our collagen is made from the top layer of beef hide, the most digestible cut available—ideal for puppies and dogs with sensitive stomachs.· Quality You Can Trust - Each of our dog chews is hand-inspected in the USA and carefully sourced to meet Best Bully Sticks' rigorous standards for safety and quality.