Nutrient-dense dry dog food with real salmon as the first ingredient, blended with tuna and other high-quality protein sources to support strong muscles, including a healthy heart. No matter how far science advances us, we always look to nature to inspire us. Inspired by a dog's instinct to choose nutrient-dense foods in nature, Purina ONE true instinct was created with 30% protein, including real salmon as the #1 ingredient, with a SmartBlend of real tuna and other ingredients to provide the protein, energy and other nutrients active adult dogs need. Nature plus science helps provide 100% complete and balanced nutrition to support whole body health while satisfying your active adult dog's true instinct.