The south stands for warmth and grounding.
Nature shows us that health and nutrition go hand in hand. Our animals stand much closer to nature than we humans do today, and they show very clearly how short the line is between health, nature and nutrition. They live in the moment, often sense flawlessly what their body needs, and move along with their surroundings. We can still learn so much from them.
Above all, we should not forget that nature is the beginning and the end of all life. Together with scientific knowledge, the two complement each other beautifully, instead of merely existing side by side.
Arya loves to eat grass in spring, and very specifically only in spring. Not because she feels unwell: she simply enjoys it, and at that time of year the grass is packed with nutrients. On our heath I have also seen her and other dogs eat from the soil, at one particular spot.