My cars have been broken into 11 times in the last 10 years. Police here are ineffective and cant be everywhere at once, of course. A few times, I had accidentally left the car unlocked. My 10 year old boxer alerted me last time it happened. As I opened the door, said dummy was jumping my privacy fence. A couple of minutes later he came waliking down the street past my house as nothing had happened. My wife started yelling at him and he was acting as if he had not been at my house etc..At that point, I was just trying to restrain my wife (she is quite outspoken) and staying in my doorway. This was at 3am and I have a toddler as well so my thinking was to get L.E. on the way and keep my perimeter. Every bone in my body wanted to detain the dummy but my common sense dictated I protect my family by staying put. There are so many breaki ins and robberies here I am now always in Condition Yellow so to speak, trying to be hyper aware of my surroundings, even when taking the trash out..My boxer serves me well though. If she gets mad, no one gets close to my door. She knows how to bring the noise ;-)