We have a Labrador/chow named Zoe, a very pretty dog with a good disposition. She is My Wife's Dog. I came home Friday night while Diana was out, and I heard Zoe moving around upstairs, but she didn't come down to say hello. I fixed dinner...still no dog. I worked on the computer a bit...no dog. I walked to the foot of the staircase and she came to the top of the stairs, looked at me, and still didn't deign to come downstairs; she just went went back to the bed. Finally, after midnight, I said "that mutt has got to be needing a walk", so I called her and she ambled down the stairs.
By contrast, when Diana gets home, Zoe does cartwheels and backflips.