Thanks for your reply. I hate to hear of other stories like the ones you mentioned. But I suppose there is no shortage of clueless pet owners. I guess we all were at some point. I wish the animals didn't have to pay the price for that.
I know these people meant no harm to this dog. They were very nice folks. But I wish they had never bought a dog, and hope they never do again, at least not without informing themselves first.