Barkworthies naturally shed elk and deer antlers are dense, durable dog chews that will give your dog hours of chew time. Naturally roaming elk and deer shed their antlers yearly, which are simply collected, thoroughly cleaned, and cut to a premium size perfect for your dog. Antlers are a long-lasting premium chew that are odor-free and low-mess.Recommended for large breeds. Special Features: - Whole antler with marrow inside—encourages chewers to work for their reward! - Elk marrow contains essential nutrients—zinc, calcium, manganese and iron. - No additives, chemicals or preservatives in this bone-a-fide natural chew. - Long-lasting chew helps massage your pup's gums while the textured natural surface helps clean his teeth. - Available in a variety of sizes to match the size of your canine fur-riend. Ingredients: Elk antler Caloric Content: 277 kcal/treat Made in the USA / USA Made