USDA inspected duck hearts, packaged 2 lbs per bag, vacuum sealed. This food is low in Sodium. It is also a good source of Niacin, Vitamin B6, Folate, Pantothenic Acid, Phosphorus and Copper, and a very good source of Protein, Riboflavin, Vitamin B12, Iron and Zinc. Hearts are also high in taurine which is essential for cats.