Great that we agree that anecodotal evidence is meaningless, which makes me wonder why you would mention dog's at your local shelter not having or at least not displaying SA as evidence for most dogs in shelters not having issues of SA,as this too is only meaningless anecdotal evidence.

As I already mentioned in my previous post , bu far you have failed il to acknowledge for some reason, your claim that SA affects only a minority of dogs in the shelters is incorrect when looking at more shelters than the one your volunteering at . Sources for my claims, besides my professional experience are here and here

"One of the most common behavioral problems rescue dogs suffer from is separation anxiety, a condition in which the animal is so upset when left alone that he reacts in a variety of ways, such as barking profusely, having accidents indoors, or destroying the furniture."

"Common" means the opposite of "rare", right?

So to make it perfectly clear your claim that shelter dogs rarely suffer from SA is wrong.

The other anecdotal stories about the dogs that in fact didn't come from one shelter, but from 4 different shelters and even from 4 different countries (and I have several hundred more stories like these), weren't meant to refute your claims about separation anxiety , but to challenge the phrasing of "Owners having to be prepared for surprises when adopting shelter dogs" used by you as this does not accurately convey what issues potential owners will have to deal with on the regular when deciding to adopt a dog from a shelter ,as "surprise" usually has a neutral or positive connotation and refers to something unexpected , but in regards to shelter dogs, the surprises, will in the vast majority of cases be negative so it would be more hones to talk about owners having to accept and expect "challenges, difficulties, or unforeseen issues" if one wanted to be honest to the potential owners and manage their expectations from the start. I know that it's common for shelters to appeal to people's emotions to get more animals adopted and to get donations, but one can do this while not sugarcoating facts and denying the reality of a dog's behavior,as all this shelter speak does is make people start to distrust shelters and in the worst cases turn away from "adopt don't shop".