These two mature stallions know each other well. The older we named "RED" (of course). He took over a large band of mares and colts from a powerful stallion named "Shaggy" when he was killed. The son of Shaggy was just a young colt at the time. He is the brown and white horse we call "Junior" in this image. Although Red later lost his large band, Junior went with him. They have been together since.
Red now has two mares, and Junior is still with him. Sadly, Junior will soon challenge Red. And will likely win. They are already showing some signs of conflict.