I allus just get off and down at the dog's level, initially with the bike between me and the dog.I was on a run through the neighborhood with a friend years ago. Out of nowhere, a pitbull started chasing us. I thought to myself, "At least I'm faster than my buddy." I turned around after a few seconds and I was surprised to see the pitbull only running after me. My friend had jumped on top of an SUV. So, try not to be the dumbest in the group either.