Does anybody else fear dogs so much they start to freeze?

I'm really scared of dogs. 

In 2008, I was cycling at rather high speed for a 6-year old when this dog ran out from a corner and attacked me. This resulted in me crashing into a deep ditch and breaking one of my ribs on impact. I still have the scar. 

As a result of this, and other, experiences, I'm really scared of them, particularly since I live across the street from one dog which often also tried to attack me on more than one occassion. One time, the owner saw that and said 'Oh she doesn't like the colour of your jacket'. One time, I just opened my window and that dog was under it instantly, growling and barking. 

Yesterday, one dog was staring at me on a river path, I froze and began scrolling through emails. When the owner walked past me, they yelled at me and knocked my bag over. My disability lanyard was clearly visible. 

I'd be interested to hear if anyone else reacts this way.