This may be a totally stupid question but why is it seeming like more and more people are asking questions about dogs being in heat? Aside from the obvious and wanting to get information to educate them about this subject.....
IMO I would hope that if people are allowing dogs to stay unspayed that they are doing it for the specific reason of breeding responsibly to better the breed. And it that case, meaning that you have researched the breed, showed the dogs, gained tremendous amounts of education and insight concerning all of the above. Wouldn't somewhere along the way while doing all of that, (and I am assuming that it can take years), the subject of heat and symptoms of heat would have come up??
I am not trying to be a downer, I actually posted questions about heat symptoms myself when Cami was younger and I had to wait until she was 9 months of age for her surgery as she had demodex. I guess my ignorance is that I just assumed that ALL people would want to have their pets altered to avoid the over population of pets and for health reasons.
Apologies for venting.