For those of you that have dogs and believe they not passable, it's too easy to beat a dog. I have befriended some really mean and protective dogs out there and their owners are dumbfounded as to how I did it. No, you don't need a juicy steak, it's all in how you react and treat them. Yes a dog is a good addition to a security system or if you cannot afford a system, but a dog is not fail proof.