Purina Pro Plan Large Breeds for Adult Dogs Chicken & Rice Give your big dog the taste he loves and 100 percent complete and balanced nutrition with Purina Pro Plan Brand Dog Food Large Breed Shredded Blend Chicken Rice Formula adult dry dog food. Each serving provides optimal protein and fat levels to help maintain your dog s lean muscles and body condition. Real chicken as the first ingredient helps deliver the meaty taste he craves while giving him outstanding nutrition you can feel good about serving every day. This wholesome high protein dog food formula is fortified with guaranteed live probiotics to support his digestive and immune health as well as natural prebiotic fiber sourced from wheat bran.