Yesterday while walking my 2 medium to small dogs in the park we were attacked by a free running pit bull. Fortunately I was able to land a size 13 on the back side of the dog just as it was biting at my dog's (Riki) upper hind leg. The owner had just got out of his car with 2 Pitts and a Shepard mix. One of the pits was chasing a ball while the other 2 dogs made a bee line for me and my 2 timid lap dogs. Fortunately no one was hurt. During the attack the owner was several hundred feet away, he immediately began cursing at me for kicking his dog! In retrospect I see that the closer he got to me the calmer he got. 6'3" 240lb (190cm 110kg) does that sometimes. After a bit of shouting I went home and called animal control. We do have leash laws here, all dogs are supposed to be leashed, One of the other old duffers who walks his lap dog in he park frequently carries a club just for this reason, I sort of smiled at that as a weird quirk, no more.