Packed with full-colour illustrations and diagrams and extremely informative entries. Never again need you look like a fool when somebody asks you, `What bumosaur is that?'

Features useful facts such as:

Bum-headed idiotasaurus - consisting of one large bum with a smaller bum-head atop, idiotic in both looks and behaviour.

Poopigator - just like an alligator, except browner. And smellier.

Also includes important - and frequently sought after - information about the greatest bumosaur battles ever!

From a No. 1 bestselling Australian children's author and illustrator team.

This book has been graded for interest at 7+ years.

This book was published 2015 by Pan Macmillan .

Jill Griffiths is a very talented editor, and also Andy's wife. She is a key member of the Treehouse team and helps to brainstorm the fantastical adventures. She lives in Melbourne, Australia. Terry Denton has written and illustrated many children's books, several of them with Andy, including the award-winning The 13-Storey Treehouse . He lives with his wife and three children.