I woke up one morning hearing this noise. I thought OH NO NOT A MOUSE!!! I layed there and listened and listened totally still. Trying to figure this out at 5am. Finally I looked at the window and the cat somehow had pushed out the screen and he was sitting on the roof and was batting at the screen to come in! OMG!! He did the samething to my son and he had to actually go out onto the roof outside his room (I wouldn't have done this) to get him.