That's what I thought. You scoff at the suggestions of others with a fanciful tale of doggy retribution involving your meter maid. Tearful and wetting himself. Then asked if you had first hand experience you claim yes, then refuse to explain how you yourself dealt with the situation. And the outcome. Probably because it will contradict what you seem to be saying.
I myself have been bit several times. Usual breaking up dogfights. (Rescue hounds) You get in the middle you get bit.
I have been attacked(chased) as a child on a bike. Peddled as fast as possible. I have been attacked as an adult. Swung my pack, dog bit it, kicked it as hard as possible. It ran away. Yelping I might add. I was bit while camping, I wasnt even looking, a friend with a heavy stick handled that one.
Knife recommendedation? Sure. Anything long enough to reach the vitals.
I stand by my declaration, your meter maid is a pansy. Or you severely embellished the story. Or it didn't happen.
I have a friend who was attacked as a kid. The dog ran off when the father came running and screaming. Lol, super secret highly trained Uber attack Kevlar kick proof shock resistant dogs everywhere.!