Description KONG Wild Antler products are created using US-sourced, naturally-shed wild elk antlers. No animals are harmed in the process. All KONG Antler products are produced using the freshest, highest quality, grade-A elk antlers. Elk antlers are the most delicious and irresistible, since they have the largest marrow core of any antler. Elk antlers are also considered to be the longest-lasting of all antlers. Unlike dried bones, antlers contain more moisture and are virtually impossible to crack or splinter, this also makes them easier to chew.