Straight Bully Stick Dog Chew. All of our Natural Treats and Chews are USDA and FDA certified. No odor. 100% all natural. Perfect for those aggressive chewers. 100% digestible, low in fat, and high in protein, they provide plenty of chew time for larger dogs and last extra long when used for smaller dogs. No preservatives. No additives. Buy with confidence. Any bully will clean teeth and gums because of the chewing action required to eat the stick. This is a natural product so thickness, shape and color may slighty vary. We suggest that you supervise while your dog enjoys any chew treat.