The Good Pet Kitchen Lamb Lung Air Dried Dog Treat is su-paw delicious and nutritious, too! It’s made of grass fed, free range New Zealand lamb lung, which is rich in protein and low in fat. The treats are a healthy, lean option for your best friend. They are air dried to preserve the ingredients without damaging the natural nutrients. These treats are free of GMOs, grains, glutens, corn, wheat, soy, fillers, sugars, glycerin, colors and artificial flavors or preservatives. Use them as a topper, mixer or a yummy training treat.