Hundurs Crunch Jerky Fingers have only one ingredient: Cod Fish Skin. The cod are caught in the North Atlantic Ocean in a certified sustainable manner and then air-dried so as to retain the inherent nutrients in the fish while also naturally preserving them (but your dog will just think that they smell and taste amazing). These fish skin treats offer a natural source of Omega 3 & 6 fatty acids, support skin and coat health, and help fight tartar while your dog enjoys the long-lasting chewing satisfaction. They make great replacements for rawhides and bones. And since they are only one ingredient, you can be sure that these treats are grain free and contain no artificial flavors, corn, wheat, or soy.