Our Lamb Formula features a clean, low-fat protein that helps your dog build strong muscles while maintaining their weight at an optimal, healthy level. Along with an assortment of essential vitamins and minerals, our Lamb Formula provides your dogs with the nutrition they need to be healthy, strong, and full of positive energy. Our recipes are always grain free and chicken free to keep food sensitivity at a minimum. Your dog will also love the taste. Zignature® Lamb Formula – Learned from Nature, Crafted to Perfection.