Extremely Stubborn or Incredibly Lazy?

I think it is normal for animals to move when their personal space is invaded or disrupted. Agreed? Good. So what's the deal with my dog, then? My cat seems to have no problem understanding this concept. When she is lying on my lap and I need to get up, I only have to move slightly and she gets the hint and leaves. Skippy, on the other hand, would gladly stay on my lap until I am almost upright and gravity takes over. It's tempting to see if she would actually let herself fall; but as she starts to slide off my lap when I begin to stand, it's clear that she would rather tumble two feet to the floor than move out of the way.

This refusal to move isn't just limited to lap-time. Skippy occupies a small space on the bed at night, due to her need to get up and walk around on the laminate floor at 3 o'clock in the morning; so we compromise. On more than one occasion one of us has woken up to the sound of too little air being drawn desperately into a small pair of Jack Russell lungs. We then realize that one of us has rolled onto the dog and is slowly suffocating her. Good job, Skippy. Whatever you do, don't move or try to save yourself. We even woke up once to see her wedged between the wall and the bed, legs dangling in the air. Apparently, we had nudged her over too far. She just looked at me, stuck as she was, trying to figure out what happened. Here's some advice, Skippy: move.

Another time, she climbed in between the duvet and its cover to find a cozy place for an afternoon nap. Before she could get comfortable she did that nesting thing that Jack Russells do, but as she was rapidly moving around and pawing at the duvet, she fell off the bed while still inside the cover, and the duvet followed on top of her. She landed in a crumpled ball of fabric. We could see her shape moving a little as she looked around her. There was no visible way out and so she decided to lie back down and continue her nap until she was rescued.

In a slightly related incident, but far less deadly, Skippy climbed into the laundry hamper for a nap while my wife was making the bed. When the dirty sheets were unknowingly thrown on top of her, Skippy did not budge. Why move? We could bury her under heaps of dirty clothes and she would lay there, wheezing, indefinitely. So, what's up with my Jack Russell? Is she so innately stubborn or is she actually that lazy? I'd like to suggest a third option. How about crazy?

Maybe if I'm quiet I could live here.