Scientific research has shown that dogs digest plant proteins and that many of the essential nutrients they require can only be found in plants and not in animal based products. Dogs became omnivores thousand of years ago, because of their domestication and close association with us humans. So they’re well suited to a plant-based diet, as the essential vitamins, minerals, phytochemical and antioxidants found in plants help keep their cells healthy, their body in balance and their immune system functioning at its best.