Book excerpt: B logging has revolutionised the way we communicate our interests and spread news. This book is a compilation of various articles from the blog, Tetrapod Zoology(currently hosted at www.scienceblogs.com/tetrapodzoology). As of early 2010, Tet Zoo - as it's affectionately known - is in its fifth year. It's become reasonably popular (it has a daily readership of several thousand) and is now well known internationally. Or, it is, at least, among people interested in zoology and in scientific blogging. Welcome to the world of Tet Zoo: mphibians, reptiles, birds and mammals(the tetrapods), living and fossil. Their evolution, ecology, behaviour and biology. Think killer eagles, dinosaurs, giant caimans, mystery cats and lake monsters