Your post made me laugh.
Speaking of Labs. There are no more gentle non-aggressive dogs on this planet.
Which brings me to the time I actually brought a black Labrador INTO our very own yard. Which is also Jo-Ann's yard, you should understand.
Well Jo-Ann did carry on like a damn nut what with this dog in HER yard but read my lips, SHE NEVER, NOT EVER, NOT NEVER, made any attempt to ATTACK the Lab.
In fact, she was so damn scared she actually squatted and shat a runny poop. She ran around the Lab, she acted like a real bitch, you should smile, but she never attacked a dog IN HER OWN YARD!
The Lab, for his sweet kind part, just stood quiet and still and let the she-bitch carry on like a dog demented.
In other words, he made no aggressive move towards Jo-Ann, who likely thought she was giving this interloper a real warning lest he get any ideas.
Conclusion....dogs that do not attack Jo-Ann...LIVE to tell about it.