Best Bully Sticks USA All-Natural Moose Antler Rich in Healthy Minerals: Moose 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 Large to Extra Large Dogs and Strong Chewers NO Additives: Free of preservatives, hormones and unhealthy chemicals for a great alternative to chemically-processed rawhide Durable Dog Chew: Moose Antler is one of the Longest-Lasting Natural Dog Chews you'll find