Evolve Classic Beef, Barley & Bison Recipe Dog Food is a great-tasting dog food made with incredible ingredients like beef, barley, brown rice, oatmeal, bison, apples, carrots, and cranberries. Because we care about the quality of our dog food, we chose to make real beef the number 1 ingredient. Evolve Beef, Barley & Bison Recipe Dog Food has no wheat, corn, or soy and produces a mouth watering aroma that your dog will find irresistible. Evolve Beef, Barley & Bison Formula Dog Food is the smart choice for your pet. Choose More. Choose Evolve.