It cots me about a dollar a day to feed my alarm system.
I love dogs and wish I could fit a couple of them into my lifestyle, but I can’t at this time. My only point is that a scary Doberman On Guard sign alone will keep bad guys moving down the street. They are not going to shake your fence to see if a Doberman is really there. Along with empty brass on the ground, motion lights, and cameras (even fake ones.)