Nulo Frontrunner Ancient Grains Turkey, Trout & Spelt Recipe – A flavorful adult dog formula that blends real turkey and trout with gently cooked ancient grains like spelt and barley. This protein-rich, grain-inclusive kibble provides the high-quality animal proteins (over 75%) your dog needs for lean muscle and lasting energy, plus taurine to support heart function. Nulo Frontrunner includes a custom blend of probiotics and prebiotic fiber to promote healthy digestion and a strong immune system. The result is a nutrient-dense, great-tasting diet that helps adult dogs of all breeds thrive with robust health and vitality.