Just curious how many other Yorkies do the same.... whenever I wash windows, the paper towel squeaks when the window is clean and Rusty attacks the paper towel -and my hand-because he thinks there is a mouse squeaking in the towel. He shakes the towel in a death shake to kill the mouse. I have to be very careful washing anything glass or shining mirrors...any one else? That was a behavior I guess he was born with as no one taught him.........