Deluxe Naturals Elk Antlers for Dogs are excellent chews for your dog. Elk Antlers are composed of a bone-like material which regenerates each year, known as “branching out”, before naturally shed. Deluxe Naturals elk antlers are collected in the USA. Elk antlers are rich in calcium, phosphorus and protein derived from the marrow of the bone. They keep dog's bones and teeth healthy by providing an ideal texture to help scrape teeth clean. They are all natural, healthy, odor-free and long-lasting chews that keep dogs busy for extended periods due to their irresistible taste!