AIR-DRIED DOG TREATS Dogs will start their own stampede if it means they can get to these treats quicker. Our Air-Dried Bison Lung Dog Treats have a chewy but sturdy texture and are easy to break into smaller snacks. Bison is naturally high in protein, B vitamins, and omega-3 fatty acids, yet low in fat. These pasture-raised, majestic beasts are sustainably sourced in the US and Canada.