Is it common for guys to use their dogs as a way to pick up women?

I was walking back from class today and saw this guy walking a gorgeous German shepherd around my neighborhood. As I walked by him, he, of course, used the dog’s interest in me to blatantly hit on me. It was harmless, and more funny than anything. I just wondered if guys ever take their dogs for walks solely for this purpose, or if it’s just an added bonus of dog ownership.

Just curious.