Lefty goes completely nuts. He lunges against the window by the door, and barks his head off, turning his head in all directions so whomever is at the door gets a very good look at ALL of his flashing teeth. One of us has to pull him away and let the other answer the door--if either of us is ever at home alone I don't know how we'll manage it.

I finally stuck a label near the bottom of the window that reads, "Dog barks at window. Please be prepared." I don't want anyone having a heart attack on my front step!