"Hey, I haven't smelled you around here lately."
Sorry to tell you this, but your dog is a weirdo. You might take your dog's bizarre behavior for granted, but can you imagine how odd it would look if a human being behaved in a similar fashion? I'm not even talking about truly psychotic things like threatening to murder absolute strangers on the street. I just mean normal stuff, like the things they do at the local dog park.
You know what, don't even bother trying to imagine it. This video has got you covered:
If you don't have a little four-legged maniac of your own yet, here's a directory of no-kill shelters so you can find one in your area.