NO ANIMAL WAS HARMED IN PRODUCING THESE DOG CHEWS! Deer and elk shed their antlers naturally every year and re-grow new ones. These chews are produced naturally from a renewable source. Unlike bones, antlers do not typically chip or splinter, long lasting, no odor, and they won’t leave messes on your floor like flavored dog chews. They are mineral rich with calcium, manganese, potassium and zinc. Removes plaque and tartar buildup. *Playtime supervision is recommended.