My story is that when we had a convience store and my daughter was a baby, we had a robbery. Our employee was shot. We went to look for the 'gaurd' type dog and ended up with a puppy from our vet's dobie mom.
He told us that dogs don't really need to be trained, if they bark, that is usually enough, in fact you *don't* want a dog trained in the 'killer' type training, they will go 'off' on ya with just the wrong gesture. He told us about dobies and how they could scare people, yes, but that they were just basically pussy cats. OMG how true. The sweetest things, gentle and awesome for our daughter as well as us.
And he was right. We went on to have two more over the years, a total of 3. 2 of them long lived 17 years and 18 years each. Priceless luv bugs they are.
People can be weird, face it. Any dog can scare anyone, part the idiocy of the person when the dog is just playing, and part the "you wouldn't say that on *this* side of the fence" that my weenie girl says. And nobody is gonna be afraid of my weenie girl. But if she sniffs anything amiss, you would be wise to.
My middle size girl can scare em with her persistance. But honestly, what is scary? To most, it's that persistance. A dog doesn't have to have the muscle, just that persistance.
My large boy is truly beautiful. He is harder to be afraid of, tho he can act pretty snarly, but most people let the beauty fool em or at least delay a reaction.
Honestly, you can count on people's ignorance. That can be used to your gain in a confrontation no matter what dog you have. I have always said, people with any brain would be afraid of a small dog over a large one any time. All the large ones I know are the most gentle giants. Having had em all, I come from that experience.
But hey, that's just me.
Hope this helps someone besides me.
Ruth