Why%20don’t%20animals%20have%20toothbrushes%3F%20Should%20everyone%20brush%20their%20teeth%3F%20And%20why%20do%20baby%20teeth%20fall%20out%3F%20Curious%20young%20children%20can%20discover%20the%20answers%20to%20these%20questions%20and%20many%20more%20in%20this%20entertaining%20book%2C%20with%20over%2030%20flaps%20to%20lift%2C%20gentle%20humour%20and%20easy-to-understand%20text%20on%20every%20page.