Blue Buffalo Wilderness High-Protein Natural Cat Food Duck Recipe is a great choice to feed your cat's wild side. This protein-rich dry cat food for adult cats is packed with real duck that is sure to satisfy your cat's natural cravings. Like all Blue Buffalo cat food, BLUE Wilderness natural cat food is formulated without any chicken (or poultry) by-product meals. It is also free of corn, wheat, soy, artificial flavors, and preservatives. You can feel great knowing Blue Buffalo is helping your cat thrive with a protein-packed diet.