Deluxe Naturals Center-Cut Elk Antler Chew, Medium Guaranteed length: 5.5" to 6.5"; perimeter: 3" to 4"; recommended for 20-50 lb dogs, gentle to moderate chewers This chew is from the whole elk antler, which is split down the middle so the marrow center is exposed 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%