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."