Bully sticks are a tasty, single-ingredient treat, made from high-protein beef muscle (more specifically, a bull's penis). Beef muscle is a complete source of amino acids, which support your dog's muscles, brain, skin, and coat.
 
Given that inflammation of gums (periodontal disease) is one of the most common diseases in dogs, tough chews are an important part of keeping your dog healthy. Chews, like bully sticks, support healthy teeth and gums.