I think it is the "Code of the West" that you don't bring your dog unless he/she is specifically invited. It is rude to do so.
It is also the "Code of the West" when gathering, to not ride out ahead of the man who owns the cattle. The owner sets the pace, that's the way we were taught.
Unfortunately, there are more and more who don't understand the unspoken "Code of the West." It is a cowboy or cowman's code, and while they understand it, they sure don't talk about it much. It is something you learn while coming up through the ranks. It is a respectful thing.
Where have all the cowboys gone?