Since he was knee-high to a grasshopper, little Stu's favorite place to visit was the nearby zoo. He was there so often that even the animals recognized him. The animals' sounds, from the coos and the snorts, and the squeaks and bellows, and the brays and the whistles, were music to his ears. His mother called it a symphony. Stu loved to pretend to be a conductor when he listened to the animals. But now there is trouble brewing at the zoo. A man wants...