I also forgot to mention Chips facination with leather in the other post. I have a pair of leather sandals, the thick leather kind with big sole. Chips enjoys sleeping in them, dragging them across the house at all hours and attacking them like they are alive. Is this normal? This too has also started since we opened the windows! Help! I dont like thinking there is someone in my house because I hear the scuffing of my sandal being dragged across the floor! Silly Cat!