Having dogs and training PP dogs, I am VERY well versed in legal implications of various scenarios. If one thing I can be guilty of, I am very organized and meticulous.
Generally, there are various ways of teaching the dog in home invasion scenarios. In generality, since every case is different, if the robber is in the owner's living space, like living room and especially the bedroom, it is a "free" bite. If nobody is home and the robber dies because of it, the home owner is not liable. However, if the owner is home, they must try, if safe to do so (and this is the vague part - when is it safe), they MUST try to control the dog once the threat is averted. This has clear implication. When I am home vs when my wife is at home, the courts will view this as being very different.
Now, remember. "home" is not your yard, garage, or porch. It must be "living space", inside of the house.
I would highly doubt any court that would convict me when my dog KILLS a robber in my bedroom when my wife is at home alone. Here is the trump card. When is it safe for the the to STOP fighting, when the robber has a club or a knife? No. I have specific instructions for my wife when such things happen. YOU RUN OUT ........close the door .......and calll the police. The dog gave you time to escape. THAT IS A HOME INVASION DOG. If the dog has to give his life to give you this time, that is a noble job well done. Of course, the biggest job is as a deterrent.
If your dog bites VIRTUALLY anyone for whatever reason on YOUR own yard, even if he IS a robber, there have been cases where the robber sued the home owner. Please ask your insurance broker. They will tell you this to be true.
That is why you need a great fence. To protect the bad guy. And really, I don't want someone to get killed because he is a drug addict.
So, here is a question for you. What if your dogs are on your GATED porch, on the upper floor of your OWN home and bites a bad guy?
Answer: The porch must have a gate AND MUST HAVE A LOCKING MECHANISM, not just a latch. The idea is that the home owner must do EVERYTHING to protect the robber. Yep, I have a auto locking porch gate, with a pad lock.
I will tell you one thing, though. I feel pretty good when my doggies are home with my wife. I just felt a little sorry for the Jahova Witnesses. :lol: