It amazes me how many are essentially going "out of their way" to not use lethal force against attacking (or preparing to attack) dogs. Perhaps their owner trained them to do such things, or perhaps they are simply irresponsible or ignorant. In either event - that's their problem.
I see those dogs as no different than a young home invader that is inside my home. My concern won't he how his parents raised him, or anything else...that's THEIR problem. But it's possibly the last time it will be a problem.

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Stay protected my friends.