Sadly, I'd have to advise against the guard dog notion. If your dog attacks someone, even someone breaking into your home with nefarious intent, they can sue you & drag you through the legal wringer to the point you'd gladly give them 400# of ram just to drop it. Most states' laws provide for this situation in favor of the homeowner, especially if there are clearly visible signs posted staing "guard dog on duty".



Still, defending oneself even from a frivolous lawsuit isn't free, cheap, or easy.

Cameras & strong locks remain your best defense.