Professor Wormbog

Professor Wormbog has collected a Kerploppus, an Ickky, a Murgatroy, and a Useless. He has every beastie from A to Y, but he doesn't have a "Z," the elusive Zipperump-a-Zoo.  None has ever been caught, but that won't stop the Professor.  He looks underground, in the sea, and in the air, and discovers just how hard it is to find the Zipperump-a-Zoo – unless the Zipperump-a-Zoo wants to find you!
 
Mercer Mayer creates a nostalgic world full of impossibly silly creatures. His classic illustrations are so filled with humorous details, they'll please both adults and children alike.

Mercer Mayer is the most prolific, talented, beloved, and bestselling children's book author and illustrator of all time.  He has created over 300 titles and sold hundreds of millions of books in scores of countries around the globe.  He is best known for his Little Monster series (of which Professor Wormbog is a cult classic) and his Little Critter series (of which there are over 200 titles alone – with 150 million copies sold.

His first book (Dial Press) was A Boy, a Dog, and a Frog and was the first-ever wordless picture book.  There's a Nightmare in My Closet followed to tremendous popular acclaim – and then the Little Monster and Little Critter series made him one of the most beloved children's author/illustrators of all-time…with a fan following ranging from pre-school toddlers to grandparents.  His career spans 35 years and continues to grow with every book introduced. His books appear in virtually every library, school, and retail store in America – and most throughout the world.