This reminded me of something my Stafford did a few years ago..and he hasn't done it since...I was sat on the sofa reading and he was sat at my feet when i notice that he is staring transfixed at a point in the corner of the room above the TV..he was sat like that for a couple of minutes and would NOT look away..it was so creepy..i have no idea what he was looking at as he was looking at bare wall..there was no bugs or anything.
This was when we lived up in Scotland and my neighbour had recently lost his mother and was always saying that weird stuff was going on..not sure if there was a connection or not but it makes you wonder!