Hannah too likes to do something similar. If her Kong is on the ground outside and she won't bring it too me and I walk over to pick it up, she will wait until I am about a foot away and then dash over to scoop it up seconds before I get to it. She recently added another tactic which is to drop the kong under some bushes or trees where it is very difficult for me to get to and then ignore me when I tell her to get it. I can just hear her thinking...*Let's see YOU "Get the Kong"*.