Juneau and Jessie (mostly Juneau though) scared the beliefs right outta two Jehovah's Witnesses who came on our property. One lady wouldn't even leave the driveway. The other was braver and rang the doorbell. Jessie took her position right next to the door, barking her most ferocious I will protect this house with my life bark. Juneau hit the loveseat which sits in front of the bay window. On his hind legs, head thrown back and just bellowing his famous woo woo woo, intermixed with the occasional deep bark. It's 150 pounds of dogs. It's very loud. It's the ultimate security system.
I listed this tag on etsy, with an "adults only" graphic before it. Sorry Mom.
Juneau went to the end of the driveway, then one foot farther - thus putting himself on the wrong side of the invisible fence line. He didn't have his collar on, but these fences work quite well (unless you are Miss Jessie and you figure out if you run really, REALLY fast, you can make it across without getting shocked). Without his collar he didn't receive any shock, but he was afraid to come back across. He stood there whimpering and whining, waiting for rescue. Calling his name, coaxing, coaxing with food - none of those things work. Dad had to walk down there and pick him and carry him across the threshold so to speak.
I should explain we are the second to last house at the end of a dead end street so there is no through traffic. Our back yard is teeny and tiny, but the front yard is quite spacious. Jessie is a very friendly dog, and Juneau, although loud and wolf-like and imposing, would not let a stranger get within 10 feet of him.
We had hot dogs for dinner - Hebrew National of course - they are zee best.