Beef Lungs make an excellent all-natural on-the-go treat as they break apart easy and can even be used as a training treat. With a delicious fluffy like consistency your dog will adore these treats. Beef lungs are naturally high in protein yet low in fat, and contain a good amount of vitamin C, vitamin B12, iron, and zinc. Our beef lungs come from a local, fresh farm, and are dehydrated right here in our pet store. You can't get any more natural than these treats as they don't contain any added fillers, preservatives, additives, chemicals, or colors.