Sorry yeah. Unless I really know a dog, I did not mean that specific. I am not a dog whisperer :-O. I just meant that if I try to connect with the dog and I get a poor response, a tummy upset could be one possible reason. If I know the dog well, maybe, just maybe, I can ID the way they feel more often than not.
What concerns me with the idea that the herder should stop is that, while that may work for its boss it may not work for other people, especially if they have a different idea of how to give commands, interact etc. IME many dogs will sit for their owner but not strangers.
Thanks for the link. Great!