Fish Jerky Treats for Dog & Cats. At Polkadog, we're all about locally sourced, made-in-the-USA, limited ingredient natural dog treats. Our super-duper fish skin dog treats are no exception. The cod we use to make these cod skins for dogs is caught wild in season by fishermen on small boats in Alaska. We hand-roll and slowly dehydrate each skin in our Boston kitchen to create these crunchy, savory, healthy cod skin treats.  Single Ingredient Treat; Cod Sourced in the United States Guaranteed Analysis /Calories: Crude Protein (Min) 70%, Crude Fat (Min) 2%, Crude Fiber (Max) 0%, Moisture (Max) 10% 3260 kcal/kg 38 kcal/treat