Woofpak Beef Lung Puffs are freeze-dried, single ingredient treats made fresh in our kitchen. High in protein and low in fat, they support lean muscle and overall vitality. Perfect for dogs and cats of all ages, these natural, crunchy puffs offer a healthy, satisfying snack! Benefits: Beef lung is a good source of Riboflavin, Pantothenic Acid, Potassium, Zinc, Copper, Vitamin C, Niacin, Vitamin B12, and Iron.