Deluxe Naturals Whole Elk Antler Chew Guaranteed length: 5.5" to 6.5"; recommended for 20-50 lb dogs, moderate to aggressive chewers This is the most common form of elk antler dog chew that you're likely to find in the market, with limited marrow exposed on each end Product of USA; natural and full of nutrition with no growth hormones, antibiotics, or preservatives Naturally shed antler, meaning no harm was caused, ever, to the animal it comes from An excellent source of calcium, phosphorus and protein for dogs: protein 38%, calcium 18%, phosphorus 9.9%