Honestly, I'm not nice at ALL in these situations, because both of my dogs are dog-aggressive. I've called animal control many times, I've givin irresponsible owners tongue-lashings up one side and down the other, as well as threatened to call animal control, and once when I couldn't get both of my dogs out of the way of a large GSD that was chargin us, I kicked the GSD in the chest to divert him from getting to my dogs. I felt awful, but if Wilbur (15lbs) had attacked him I wouldn't have blamed him at all for defending himself, snd that defense could easily have killed my dog.