That is one of the best types of security you can have. I have two small dogs, Poms, but they can hear a bicycle going down the street with the TV going and them in the back rooms and they let me know about it. I am taking care of one of my neighbors places while he is in Germany with his girlfriend visiting her parents and yesterday they started barking and I went to see what was going on and two of the Jehovah Witnesses had opened his gate across the street and started up to his house. I told them he wasn't home and to go next door. Even they won't go there most of the time.
Ron
