That’s why no matter the form, flavor, life stage, breed size, health need or dietary preference, purina one dog food formulas have an option just for your dog. Click the button below for help finding the right formula for your dog. The brand was introduced in 1986 as Ralston Purina’s first super-premium pet food. I’m… Continue reading Purina One Dog Food, High-Protein Formula, Wealthy Weight, Adult 16 5 lb Dog Food