The true needs of dogs and cats come first for Nature's Protection. Because only when feeding dogs and cats the way nature intended, we can expect a healthy longevity for them. While cats are true carnivores, dogs can survive as an omnivore, but they thrive much better if fed as a carnivore. We are not interested in letting dogs just survive … we want them to be fed the best!. You will always find a meat based protein source in all Nature’s Protection diets.