“A dog will look at the on-screen picture and you can see it thinking 'I wonder if …' as it runs around to the back. 'That’s funny, they’re not here.' Back the front of the screen. 'Ah, yes, they are still here.' Then around to the back again …"
My dogs don't really care about what's on TV. The only time they seem interested is when they hear a doorbell ring (because they think someone is really at the door) or when they hear a baby cry.
Link via Les.