We now know why we spotted Michael Vick trolling around the Chicago airport -- he's there to howl about the unethical treatment of canines at an event for the Humane Society of the United States.A rep for the H.S. tells us Vick just spoke at an anti-dog fighting event in the Englewood section of the city -- which will help raise awareness about his efforts to clean up his own image.
If you're sad you missed Vick's speech, don't worry, the H.S. rep tells us it's all a part of his probation and he'll be doing this for "months and years" to come.










