I saw a news report about a deer that had gotten a plastic trick-or-treating jack-o-lantern caught on it's mouth and nose. It had had it on for at least 5 days -- preventing it from eating or drinking. Rescuers had planned to attempt to tranquilize the deer and remove the pumpkin, but instead, today the deer broke free! I love happy endings.
Please don't litter -- it does more than make things look bad.