No, she did not die, but stunned her momentarily. Enough time for me to get the hell out of there.
New delivery area, fenced yard. Did the usual, banged gate, made plenty of noise to alert any dogs I was there. Nothing. Went in the gate toward the door, passed a big bush on the right and had a 110 pound female shepherd charging me, ears back and growling. I wound up and hit her with that DIAD with all I had as she lunged for my arm.
Funny thing is? We made up weeks later. I got on her good side. She now looks forward to me delivering packages to her house.