Purina Dog Chow Real Beef Flavor Dry Dog Food, An easily digestible dog food with a crunchy Purina dry dog food texture to help clean your dog's teeth, this formula has a lot to like. Each Purina Dog Chow Complete dog food bag is packed with enough high quality protein to support your dog's strong muscles. That's not all: this hard dog food delivers 23 vitamins and minerals along with plenty of antioxidants to bolster your dog's immune system.