A nursery school teacher was delivering a station wagon full of kids home one day when a fire truck zoomed past. Sitting in the front seat of the fire truck was a Dalmatian dog. The children started discussing the dog's duties. They use him to keep crowds back," said one youngster. "No, said another, "he's just for good luck." A third child brought the argument to a close. "They use the dogs," she said firmly, "to find the fire hydrant."   back...