"One rainy night, Penny and her daddy take an underground train packed with passengers. As they stand in the crowded car, Penny can't believe what she's seeing. A tiger's tail? A tiger's paw! No, that's just a person with a striped glove, assures Daddy. But when they find a seat and Penny has a clearer view, there's no mistaking the tiger's foot poking out from under a pant leg. And when this extraordinary tiger makes a sudden, marvelous leap across...