My girlfriend in Cleveland has an Australian Cattle Dog, otherwise known as a Blue Heeler. She occasionally commented about how infrequently she would see other ACDs out in public, and it was a rare treat when another ACD showed up at the dog park.
In Austin, it;'s a different story. It's unusual when I go to the dog park and there's NOT an Australian Cattle Dog, if not two or more, among the pack. I was told yesterday that Austin's animal shelters and pounds are absolutely filled with ACDs. I see them on the streets everywhere. While they're not the most common dog, there seems to be a disproportionately large representation of them in the region. Considering their rarity nationally but their popularity in Austin, the Australian Cattle Dog seems to be the Official Dog of Austin.
In Buffalo, it's a different story, There's only one dog park, and it's in rough shape. Buffalo isn't a dog-friendly city; shops don't allow customers to bring their dogs inside, they're seldom seen on outdoor patios at restaurants, and there's not much of a dog culture compared to similarly sized metros. The types of dogs that are everywhere, at least compared to other cities I've been in? A mix so common it's almost it's own breed, one I call the Black and Tan Hound; a mix of German Doberman, Rottweiler, Labrador, and some other brown or black dog. Shortly behind, owing to the large population of blue-collar white ethnic senior citizens and elderly who are attracted to things that are "fancy" and "classy" : the Shih Tzu.
Does your city have an "official dog"; a breed that seems unusually common there compared to other parts of the country?