When a treat comes from free-range, grass-fed cattle, you can be sure it’s top-notch goodness for your best buddy. Barkworthies Beef Cheek Peanut Butter Dipped Dog Bones are chock full of collagen, a naturally occurring protein that’s one of the key components of all connective tissue. These bones can help bolster joint health, aid in digestion, and promote healthy skin and coat.