In almost everyone's life there is one event that changes the whole course of his existence. The day Sam Beaver visited the Philadelphia Zoo was the turning point in his life. Up until that day, he had not been able to decide what he wanted to be when he grew up. The minute he saw the Zoo, all his doubts vanished. He knew he wanted to work in a zoo. Sam loved every living thing, and a zoo is a great storehouse of living things -- it has just about every creature that creeps or crawls or jumps or runs or flies or hides.

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