Oxford Reds is our first major superseries for newly confident readers. Each book is on a real life subject, with a simple lively text and richly coloured, realistic illustrations.An elephant has only four teeth. Each tooth is as big as a brick and as rough as a cheese grater! Did you know that an elephant wears out six sets of teeth in its lifetime?Elephants love mud, partly because, although their skin is two centimetres thick, it burns easily in the sun. Mud is like sun cream for elephants!