Natural Farm Collagen Sticks (6 Inch, 15 Pack). Odor-Free, 95% Natural Collagen Dog Chews, Supports Healthy Joints, Skin & Coat - Best Rawhide Alternative for Small & Medium Dogs: Collagen Sticks are made from 100% natural beef skin. Never chemically treated to preserve nutrients and makes a great rawhide alternative. Made from ethically raised grass fed, and finished beef. Highly digestible dog chews, grain free and GMO free with no additives. % : A potent natural source of supplemental collagen that provides natural support for healthy joints, skin and coat. No additives, No chemicals, just one ingredient: beef skin. : when