These two guys have been together since they were 6 months old. They have so much fun chasing each other, running and playing. I built a small hill that they run up and down on. Sometimes in the morning, they are just standing up there like the "king of the mountain". They are like two big dogs. They bray when they see or hear me. One would think that they want to be fed. No, they want to be petted and talked to. They are so much fun!! I want them to stay together. The little guy is registered.