I am a little late on this post but why would someone need "guard" dogs? I guess I am spoiled because I live in an area where I do not have to live in fear. What are the dogs guarding?

This is why I love my Labrador. She will bark and bark and bark but once you get in the door she will wag her tail and bring you a toy. I doubt she would even bite a stranger/burgler. (I hope no burglars are reading this)