Deer Antlerz are 100% natural, mineral rich, long lasting dog chew. The new chew is made from a natural material that is rich in minerals, does not splinter and comes from a completely renewable source: Deer Antlers! Wild deer shed their antlers once a year as part of a natural process, after which the deer re-grow another set. For Dogs Between 25 lbs and 60 lbs. FREE SHIPPING ON THIS ITEM!