You just put your left or right arm up depending on whether you are left or right handed, on the one in about a several hundred thousand chance you MIGHT get bit.
There are no domestic dogs that can kill an armed, prepared man unless they are trained to do it.
How many of us have dogs that are trained to attack in a military type manner, none of us?
All dogs will attempt to intimidate rather than all out attack; it is their nature to protect their property from unknown invaders, that’s why we have them.
Plus they are better company and more trustworthy than 99.999% of the so called human race.
I think you may have swerved into the root of the cop dog shooting epidemic.
"Protect our property from invaders" - the government and its agents don't like this concept. For one thing, in their worldview, you should not be claiming anything as "your property".
Secondly, it is inherent in the "progressive" worldview that you have no right to defend yourself from the government or its agents - you are to SUBMIT.
Now, I think we're getting closer to the "why" of all the dog shootings.