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 fell to 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.“