Sadie hasn't done anything like that here, but Jay has!!! There are days he'll go OFF viciously at the kitchen doorway, fully hackled, barking and growling. There was one day I was snuggled in bed watching tv (Had been a bad day) and I could hear the hallway lightswitch going on and off, on and off, like little kids playing with it. I have no kids and I've heard the lightswitches quite a few times. After a moment or two of the flicking Jay got up off the bed and stood at the bottom of the stairs. For a moment he stood perfectly still, Tail straight out and hackled. All of a sudden he started wagging his tail and stepped up onto the first step, tail just going mad. I'm pretty used to it here though so it doesn't bother me. There's a lady in our basement that looks up and around the staircase at people. For some reason they always get mad when they realise I'm upstairs hehehe.