I remember watching that NOVA episode, it was pretty spot on. Yes, I can tell the difference between a mail call bark and a hey there's a friend at the door to OH NO there's a dog walking past the end of my driveway...
Venus of Crooked Creek 1/26/13
Otto von Hena-C 05/23/08
Morgan Donnermond 08/04/01 to 9/28/12 Long Live the Queen!
I have duct tape and I am not afraid to use it.