Book excerpt: This delightful, informative flap book explores the everyday topic of teeth cleaning in a charming, fascinating way. Discover how animals look after their teeth, why teeth wobble and fall out and how you can keep your own teeth healthy and white. New in the award-winning, bestselling series. The sturdy flaps make this board book perfect for little fingers. Other titles in the series include What is Poo?, What are Germs?, What is Snow?, What are Stars?, What is Sleep?, Why do we need Potties?