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.