When I was a very tiny tinierwoof, we had this one neighbour with a German Shepherd.
One day as we were coming back from the store, as I was happily skipping ahead, the dog was loose and it decided to start growling at me.
My mother had her hands full and the neighbour just didn't give a crap.
Thankfully, it was all growl and no bite, and I was so tiny I don't even remember the thing myself, altho it probably did mark the start of my fear of dogs.
After that, we had another neighbour with several dogs, one of which was the stereotypical Doberman with cropped ears and a docked tails.
It was really badly behaved too and they'd probably only gotten it for the coolness-factor of it.
They'd let it outside into a small fenced in area in the back yard where it'd just bark and growl at anything and everyone.
Eventually, it had to be put down as it kept biting its owners.
My grandparents also had a neighbour who seemed to enjoy collecting dogs of this one small-ish breed.
She had like... Half a million of them. And she'd just let them out in her back yard where they'd instantly be running along the fence barking and yapping if me and my brother were trying to play outside.
Given my earlier experiences with dogs, I never felt comfortable outside as I was just expecting those things to manage to break out.
And for good reason too, as they had in the past, and then one of them bit my grandmother.
(Another time, a woman who'd been out for a stroll in the area had gotten bit by one of them too, and because the owner either wasn't at home or didn't care, she came knocking at my grandparents door asking to borrow a phone.)
Another neighbour had two huskies and a Schipperke.
The huskies were kept outside in a small pen and the Schipperke would roam around on the deck of the house.
True to crap owner fashion, the dogs got loose on several occasions, and at this stage, I was already terrified of dogs in general.
I ran from the huskies on at least two separate occasions, and once, from the Schipperke.
I was walking back from my school bus stop when the thing came running, and it was terrifying enough in my head to warrant throwing my school bag and jacket.
Much to the amusement of my mom, who still likes to bring up this story and laugh at it.
I still don't feel particularly comfortable around dogs, but I dunno if I'd feel the need to panic and flee in terror from a dog smaller than a house cat these days.