1What has 4 teeth, spines all over its body, and is one of the most poisonous animals in the world? The puffer fish! Avid and reluctant readers alike will quickly devour the fascinating facts about the habitat, life cycle, evolution, and more of this strange family of fish. Each spread is filled with lively, full-color photography of this diverse family of bizarre fish. Fact boxes add to the exciting experience by providing quick, strange tidbits. For instance, puffer fish defend themselves by filling up like a water balloon. Marine biology does not get any weirder than this!