I changed my horse's name from Chief to Scooter. He is the horse in my avatar... doesn't he look more like a Scooter than a Chief?
He was 11 when I changed it, but I don't think he was Chief for too long before I changed it. I think it was something else before, but I don't know what that something else was sooo too bad for him he's Scooter now. He has been for almost three years now and he is still functioning properly... no bad luck.