My story is far tamer. About 20 years ago the cops rang my doorbell and told me that a dude they were chasing was spotted jumping over my fence from the back alley into my backyard. They appeared at my door with their K-9 (a German Shepherd). My dog, a 150 lb (very friendly) Newfoundland, came to the door with me and scared the crap out of their pooch, without making any aggressive moves or sounds. The macho cop, whose hand was now on his holster, got very agitated and told me I better get my dog outta there fast, else there could be trouble. I of course complied and everything turned out fine. But I'll never forget his anger after getting his ego bruised.
Ooops ...didn't mean to italicize that in the last post.