I am a UPS driver who spends 11 hours a day delivering packages to homes in mostly rural areas. Most of these homes have dogs and many of them run loose, so dealing with other peoples dogs on their property in the role of an "intruder" is something I have a lot of experience (25 years) doing.
You would be amazed (and maybe a little disturbed) how many supposedly "mean" dogs can be won over with nothing more than a few kind words and a biscuit. Yes, I'm talking about your dog. Your pit bull, your Doberman, your Rottie. The one that was barking like crazy and acting all tough when I pullled into your driveway, but which jumped right into the open door of my truck the moment I killed the engine and took a biscuit from me or is trying to get up into my lap to be petted.
I especially love it when the owner comes running out of the house, all apologetic and concerned about the fact that his "vicious" guard dog was barking at me and jumping into my truck, only to find said dog up in my lap munching on a biscuit or lying flat on its back on the floor of the cab getting a belly rub.
The sad reality is that a lot of people have an overrated sense of how effective their so-called "guard dog" actually is when it comes to deterring or intimidating people. In my opinion, a dog should serve as an alarm and a companion, nothing else.
I'll tell you this much,if you came to my house,well put it this,that's exactly what my dog would do,but if you forgot the treat,that's a different story. I don't know what it is with you guys,but she seems to like ups guys,but not anyone else.