What would [your dog] do in a dangerous situation?

Afraid for my safety for the first time in a very long time, I wondered what Singer would do in an actual emergency.  (Not an emergency involving a lack of thumbs and a screw top container, but a real one...)

I was walking with Singer in a familiar neighborhood when a minivan stopped beside me.  I thought she was going to ask me for directions.  Instead, the woman asked through her passenger's side window, "Do you know that man?"  "What man?" I asked.  "The man in the white car.  He's been following you."  I think I stammered "What?"a few times, before I recalled that as I was turning a corner a few minutes earlier walking towards three teenagers, I'd heard someone yell something like "Narrr."  I assumed it was someone saying something to the three boys, but thinking back, maybe the man in the white car had started following me at that point.  In any event, I again asked the woman which car she was talking about, and she pointed towards a white car that had just gone through the stop sign.  

I speed walked back towards the house keeping an eye out for the car, hoping to get home before he came back.  Along the way, I ran into a man working on his car in the driveway.  He must have seen how terrified I looked, because he immediately asked me what was wrong, and I told him about the car and the man.  He told me he had girls too, and kept an eye out as I ran home.  I am thankful for that watchful woman, and the kindly man and perhaps a little more suspicious about the world in general.

But what if the worst had happened?  What if the man had come back around, or stopped his car?  Would Singer have protected me?  I'd like to think so, but I also know that if Singer had ever been in harm's way, I would (perhaps stupidly and ineffectively) have protected her in any way I could.