[Dead Corpse]

You'd better be "over reacting" only if my dog is OFF my property. As it was, this dog was still on it's owners property.

You have utterly failed to explain how a dog on it's owners property was a threat.

[SnakeDoctor]

If an unconfined (or invisibly-confined) dog attacks, expect the target to defend himself ... regardless of where the dog is in relation to property lines.

For instance, I’d sooner shoot an invisibly-confined pit bull on your property than let it get within 10-feet of my five-year-old daughter. I don’t know that I’d have shot in this case — but I don’t know that I wouldn’t have, either.

SnakeDoc