Book excerpt: When João rescues a lifeless, oil-covered penguin (Dindim) and nurses him back to health, Dindim adopts João as an honorary penguin. The steadfast friends do everything together. They swim together, fish together, and stroll the beach together. But there are real penguins somewhere across the sea. So one day, Dindim leaves João. The villagers tell João the penguin will never come back. João cannot say if he will or will not until he does . . . again and again.