Rule #1: Don't be afraid to put your head in the lion's mouth.
Although you may want to make sure there are breath mints around.
Rule #2: Show 'em your best moves.
There are few creatures that can keep up with a pug's quick turns.
Rule #3: Don't let them see you sweat...
...even if it looks like they are gaining on you. I think this is the only picture of me doing the "butt run" with my tail pointing, ears flapping, and tush tucked under. Good form, I think. And don't worry, I was not about to get pounced.
Rule #4: Stand your ground.
Make it look like you can win, even if that's not the case.
Rule #5: Stay well hydrated.
Rule #6: And take breaks.
Rule #7: If you fall, bark until you get back up.
And give them a real nasty look while doing so.
Rule #8: Don't be afraid to ... um ... go a bit crazy.
Rule #9: Keep up with them.