We really lucked out with this.
Dennis' bank was celebrating it's 100th anniversary or something like that. They were offering a free 10x13 portrait of the family. When Dennis called to make our appointment, they said family pets would be allowed. So we got to bring Haus. Of course, we paid extra for his photo, but it was worth it!
As far as sitting still, Haus was wiggly in the first few photos, but settled down finally. It didn't help the photographer kept making baby noises at him and talking excitedly. The one of all of us, Dennis has him by the collar, so he knows that means "cool it". In the one of him by himself, Dennis has him around the hips, just off camera. That shot was the 4th try! I really like his expression, I just don't like how he looks so squat.