Lily has always reacted when the mail, the paper, or packages are delivered, but lately she's gotten even more dramatic. Our living room has two huge picture windows, so Lily has a clear view whenever a delivery is about to happen. She lunges onto the couch and barks. Jumps off the couch and runs to the door. Whenever a package is brought in, Lily jumps at it and barks. I know the easy thing to do would be to move the couch, but the size of the room doesn't really accommodate that. Does anyone have some easy training tips that could help get Lily back under control?