i had a really good weekend.... i have my dad soooo well trained. i but my head against the door, and he comes and plays fetch with me, well, sometimes. sometimes he just stands at the door and watches me. i drop the ball for him, but he doesn't throw it. i don't really understand, but i keep butting my head against the door cause at least sometimes i get to play... and i am just a dog and don't really understand the principles of differential and random reinforcement.