Split Elk Rack Snacks antler chews expose more marrow down the length of the antler, giving your pet immediate satisfaction. Split Elk Rack Snacks antler chews are 100-percent naturally shed and foraged by hand from Colorado. No animal was harmed in the making of our antler chews. Elk naturally shed their antlers after the rut typically starting in Late October and continuing through the winter. Our Antlers are foraged, pressure washed, and cutup. No additional processing is needed. These all-natural chews are a great natural renewable source of Calcium, Phosphorus, Manganese and Zinc. Antlers are one of the most easily digested forms of calcium available and are regularly consumed by the wildlife including rabbits, squirrels, skunk and mink. Since our antlers are never farm raised these antler never contain steroids, antibiotics, preservatives or any artificial additives. It is important to properly size our antler products to your dog and your pets overall desire to chew. NOT RECOMMENDED FOR AGGRESSIVE CHEWING DOGS.