Oh, I think they were on the front porch the whole time. That was some other Rottweiller and Coonhound that just happened to be in the neighborhood.

Oone of my neighbors had a dog that actually removed the frame of the sliding glass door from the wall while she was at work, and pulled it back far enough to escape. She came home to find her dog lying on her front lawn, just chilling out. (The dog was a real spazz with many problems.)