Best Bully Sticks USA Natural Antler Dog Chews Rich in Healthy Minerals: Deer Antler is a Natural Source of Calcium, Zinc, and Iron Low in Fat and High in Protein: Supports a Healthy Diet and Active Lifestyle Suitable for Small to Medium Dogs NO Additives: Free of preservatives, hormones and unhealthy chemicals for a great alternative to chemically-processed rawhide Durable Dog Chew: Deer Antler is one of the Longest-Lasting Natural Dog Chews you'll find