Make way for Marley! When the Grogan family is ready for a dog, they choose Marley, a yellow furball of a puppy who quickly grows into a large, rowdy Labrador retriever. Marley has a zest for life, and as he grows, so does his enth...

How fast can some dolphins swim? What is the biggest shark? Why do sharks attack? Find out the answers to these questions and more in this Magic Tree House Research Guide! Includes an illustrated gallery of dolphins and sharks, inform...

Who invented the word dinosaur? What was the name of the biggest dinosaur? This book includes everything you ever wanted to know about the real-life world of dinosaurs.