Barkworthies Lamb Lung Treats are easily broken into smaller pieces, making them a great training treat used to reward good behavior. They're also low in fat and high in protein making them perfect for a healthy, daily snack! Barkworthies Lamb Lung Treats are suitable to feed your pet at any stage of life - from puppy to mature adult. Most importantly, dogs love the taste! Barkworthies Lamb Lung Treats are baked, 100% lamb lung, 100% digestible and sourced from America's Heartland. Barkworthies Lamb Lung is a great dog treat for sensitive stomachs. These all-natural, American made dog treats are packed with vitamin A, which is essential to your dog’s liver function.