Barkworthies All-Natural Beef Gullet Sticks are high-protein dog chews made from high quality Argentinian beef. These all-natural dog chews measure approximately 6 inches in length and are great for aggressive chewers. As beneficial as they are delicious, these Beef Gullet chews clean your dog’s teeth as he gnaws! In addition to preventing buildup of tartar and plaque, these healthy dog treats also feature a natural source of glucosamine — an amino acid shown to aid in joint health.