Our Pork Formula is a great source of muscle building protein and amino acids. Pork is also rich in minerals, such as thiamine, which helps the body convert food into energy. Our recipe is completely grain free, for dogs with food sensitivities, and contains low glycemic carbohydrates to keep your dogs healthy, strong, and energetic. And the taste is unbelievable. It is easily one of our most popular recipes. Your dogs will love it and benefit from the excellent nutritional content. Zignature Pork Formula Learned from Nature, Crafted to Perfection. Physiologically Tuned, limited ingredient premium food for dogs. Hypoallergenic meat first recipe, with no Corn, Wheat, Soy, Dairy, or Chicken, Chicken Eggs, or Chicken By-Products. Zignature Pork Formula for dogs is formulated to meet the nutritional levels established by the AAFCO Dog Food Nutrient Profiles for all life stages, including growth of large size dogs (70 lbs or more as an adult).