Amazing. My local petstores seem tuned to cute/massive scale of adoration. If you bring in a Yorkie or a Mastiff, the checkers fall over themselves cooing. There's no purebred/mutt discrimination.
I used to have the opposite problem, oddly enough. My first dog was, we thought, a mutt. A beautiful, adorable shaggy mutt who people would actually slow their cars to look at and yell "She's gorgeous!" Which was only her due. But several times, people asked, "Is that a Bearded Collie?" and I'd think, "goofy people, there is no such thing as a Bearded Collie." Which of course there is, and when I finally realized it I saw that it was her to a t.