Low fat treat. Lamb lung is rich in protein, vitamins and minerals. They are great as a training reward treat or just a yummy snack for your dog. The pieces are small, crunchy and bite sized, so it is suitable for all dog breeds. A great alternative protein to beef, these lamb nibbles are a rich source of iron, potassium and calcium. Single ingredient low in fat and all natural, can also be used as a food topper No preservatives, colouring, flavouring or additives 100% lamb ideal for adult dogs of all sizes.