In the dream, I pulled the covers up over my head and hid. That's about all I can recall.
Possible explanation? The dog has taken up nighttime residence on an old rocking chair in the bedroom. If she squirms around during the night, the rocker bangs against the wall.
Odd side note... when I got up this morning, I noticed that the back door was unlocked and slightly ajar. I'm usually really paranoid about keeping that shut and locked at night, though I'm sure that, in the course of bringing in some stuff from the car the previous evening, I forgot to close it all the way. But still....