David Alderton 
Dog Decoder [PDF ebook] 
How to Identify Any Dog, Any Time

Discover your mutt’s family tree with this extensive guide to mixed breeds. Understanding which breeds are part of your dog’s mix will help you to better appreciate its special nature. With The Dog Decoder, you’ll learn how to identify physical traits that can be used to decipher your dog’s ancestry. Extensive descriptions of various characteristics, full-color photographs, and dozens of ‘;dog-nosis’ examples that analyze a mutt’s features make this a handy book for anyone who has ever wondered where their dog came from.