Giving your dog one of the Lamb Lung Puffs from Jones Natural Chews is like giving him a light and tasty treat that's full of protein. Made of the best USA lamb lungs. Naturally baked. 8oz bag. Guaranteed analysis: Crude protein 64%, Crude fat min 14%, Crude fiber max 2%, Moisture max 11%. Dogs Know the Difference! Jones Gourmet Dog Chews and treats offers 14 years of family meat processing business experience. Raw products from USDA inspected meat plants with no artificial ingredients. Natural smoke and flavorings used and all their products are made in the USA.