Well, a mouse, anyway.
So I'm sitting at the desk at work, going through the usual start of the day things and some movement gets my attention. I look up, or rather over, and near but not quite in the hallway is a mouse. A brownish-gray mouse. It scurries a bit farther into the open. Good. I get up, and call the next guy over.. but before he gets over and before I can do anything the mouse darts back into my cube (damnit!) and disappears under shelving and such.
The annoying part is I don't where it really got to or what damage it might get to doing. So now I get to wonder if it's still here and what it might be doing to things.
I am not amused.