Penny Clarke has written many non-fiction books for children.  This book on hippos contains many fascinating facts, illustrations, and photographs.  Most pages contain “Did You Know” sections with additional information.  The text and illustrations are presented in a pleasing format.  One page directs the reader to look at the feet of a hippo on the table of contents page.  Another says to hold a page up to the light to see the skeleton inside the hippo’s body.  Words in bold print are found in the glossary.  Information about hippos includes how they were seen as gods in ancient times as well as how and where they live today.  There are 30 titles in this spectacular Scary Creatures series.  These books are recommended for all elementary libraries.