How do teeth grow? Discover the answer with SmartyCat! SmartyCat is a curious kitten who asks and answers those tricky pre-school kids′ questions with the help of his clever SmartyPants and all his friends in SmartyTown. The SmartyCat series is designed to help answer some of those tricky questions young children love to ask. Each book ends with a joke and a fun activity to try. An educational, fun and engaging series.