if a stray dog has you in a viceroy grip of lockjaw. A gentle yet firm "Thumb In The Bum" will distract any animal, giving enough time to escape.
Or for the Americans, a round or two discharged from your eagle dicked, patriotic AR15 should do the trick just as well.
Can I just consume the dog? The American way is to consume, consume, CONSUME.
Edit: Must get wider!