Rewardables Peanut Butter Flavor Collagen Chews are great tasting, naturally healthy, treats your dog will love. Each roll is loaded with collagen, a naturally occurring protein made up of the key essential amino acids dogs need to thrive. In addition to their naturally healthy recipe, each roll helps promote oral health through chewing and satisfies dogs' chewing instincts. Made with a real peanut butter coating that dogs can't resist, and their easily digestible, limited-ingredient recipe, Rewardables Peanut Butter Flavor Collagen Chews are a great-tasting, healthy way to reward your dog.