"Scrrratch.  Scrrrratch"

Scanning the room, I try to decipher where the scratching noise is coming from, but I can't tell till I get off the bed and walk around.  I discover the closer I get to the closet, the louder it gets.  Opening the door, I scan the empty space and then hear it again.

I'm satisfied for the moment that nothing is going to burst through the wall when I take a few seconds further to inspect it and ultimately decide that it's safe.  Just to make sure, I put ...