I just had to show you this photo....!
This is my 15 year old cocker, Chipper.
Each morning, he follows me up the stairs to my loft studio/office.
It's usually around 5 AM or so.
After he has said "hello" to the cats, he goes to the stairs in the hallway and BARKS!
As you can see from the photo (sorry it's not so great), he thinks he's barking at a dog looking in the window....but he doesn't know it's himself!!
(And, that window is about 25 feet from the floor!!)
God love him...he's such a pooch!!