My dog will glue herself to me better than a shadow after we eat dinner. She knows that after dinner, she gets a treat. So if I am busy with whatever it is before we have our evening tea/coffee outside(she gets her treat outside and some fresh air), I could be followed step for step for probably an hour. She has a laser focus on the prize and will not be distracted. I've not tested that theory because after about 10 minutes of constant shadowing and almost tripping over her, I'm feeling the pressure to give in.