Barkworthies Select Elk Antler All Natural Chewable Pet Dog Chew Treats Barkworthies Elk Antlers Are Dense, Durable Dog Chews That Will Give Your Dog Hours Of Chew Time, Beneficial Vitamins And Minerals As Well As Cleaner Teeth Each Antler Is Filled With Soft Marrow And Contain Essential Nutrients Such As Zinc, Calcium, Manganese And Iron That Your Dog Needs For A Healthy, Long Life Their Tough, Textured Surface Helps Remove Tartar And Plaque While Massaging The Gums Elk Antlers Are Additive, Chemical And Preservative-Free. Moreover, Most Barkworthies Products Are Single-Ingredient Chews, Which Means TheyRe 100% Healthy And Safe, Odorless