I used to have dogs and they would actually pull me. Not like the out of control dog that sees a rabbit or something. More like they walk w/you, you start to slow down, they look behind you, like - "We're still going...right?"
Right now my back is bothering me. BUT, up until that I was on a ski machine and doing ab workouts.
Ski machine is downstairs, abs just I get on the floor w/a mat.
Cat - which almost acts more like a human than a cat, well, when I did my abs, she'd lay down just like me and watch the screen. She'd fit in by cleaning her belly, lol.
Downstairs, she'd just look at me like, "K...I've got no idea..."