From the back cover:
  
The brave creatures who defend Redwall Abbey from the threat of evil hail from many different tribes throughout Mossflower and beyond.  The Tribes of Redwall is an exciting new series that takes a closer look at these tribes and at their place in Redwall legend.  There will be profiles of the main characters along with a quiz and a magnificent fold out poster.  Badgers is the first in the series.  Wise and noble, yet with a vulnerability towards the terrible bloodwrath, badgers are an integral part of life at Redwall.  As well as the tradition of the Badger Mother at the Abbey, there are close links between Redwall and Salamandastron, the legendary mountain fortress of the Badger Lords.
picture from amazon.co.uk
Notes:
  
Unfortunately, this book is currently only available in the UK.  Don't despair, however - you can buy this book through Amazon.co.uk.  It'll just cost a bit more to have it shipped from the UK.  Click below to purchase it!
Buy here on Amazon.co.uk
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