Barkworthies Collagen Chew treats are loaded with collagen that promote mobility by supporting joint health and support a healthy skin and coat. Our all-natural, limited ingredient collagen kabobs are free from artificial colors and preservatives, and give your pup the variety of chicken, pork, and beef all in one meaty chew. These treats are virtually odor free and boost digestive health. Their long-lasting texture help remove tartar and plague from your pup's teeth.