I have possibly the best anti JW you can get; an 8 year old German Shepherd with attitude. Even though the front yard is closed off so that she can't get in there, she still puts on one hell of a show. Up until recently though this did not stop them from coming around and knocking on the door and peddle their unwanted magazines and stuff.
Last time they called around was on a hot day a couple of months ago. The back door was fully open and the front door was slightly ajar. The dog heard the the front gate open (has a squeak) and went off the tree barking and carrying on. Next thing I know, she is in the house and pushing the door open with her paw and then runs up to about a metre in front of this poor guy snarling and barking. I went out to see what the comotion was all about and saw this guy standing there frozen to the spot. If he moved as much as a millimeter, the dog would lunge at him. I quickly went and grabbed the dog and the guy started leaving, saying in a sooky voice "we could have had a good conversation if your dog wasn't so savage". I know he was a JW as he was clutching a Watch Tower magazine to his chest while the dog had him bailed up. He got out the gate and ran down the steet.
I don't think this is a funny story at all but at least they haven't been back since. They have been to the neighbours places but take a wide birth of my place.