Hawaiian Grass-Fed Beef Liver is a natural, iron-rich supplement for dogs. Naturally low in fat and high in protein, liver is also a good source of Iron, Zinc and Manganese, and a very good source of Protein, Vitamin A, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Phosphorus, Copper and Selenium. What is all that important? It provides all the essential B vitamins for a healthy skin and coat as well as minerals important to the health of every dog. This comes in frozen, one pound vacuum sealed flat packaging that can find even the thinnest of space to fit into your freezer.