This book is a guide to all of the magical creatures to Harry Potter's world. J.K. Rowling writes this book under the pen name Newt Scamander or something like that. I personally think this book is pointless. It is apparantly a very important book in Harry's world, as it is a required text book for Hogwarts students and a good book to have around the house (for wizarding familys). But, it is very short and does not give enough information. Also, it does not give information that is vital to the series, such as wether or not wizards and part humans can cross breed, as in elves and humans and giants and humans. Additional info that would be good in this book is wether or not Crookshanks is part kneazle, etc. This book basically has information you could find out from reading the series, and it is so useless I find it just a marketing scheme for complete Harry Potter nuts.