I generally have no problem with dogs but I got bit for the first and only time (hopefully) about two weeks ago.
Went in to the garden and the door was open and out ran two tiny yappy Heinz 57 dogs. I went to shut the gate to stop them running out and got bit on the leg to which I exclaimed "You little b***ard!" and kicked it out the way as the apologetic owner reeled him in.
I just walked off.
Instant and permanently dropped.