For hardcore Berner people/breeders only.
Dr. Willis is a geneticist by education and experience. He has dabbled in breeding Bernese Mtn Dogs. And he currently roams the globe judging Berners at dog show events. Obviously, it is from this lofty perspective that he writes this book.
If you want to learn more about wisely breeding Berners, or learn more about Berners on a global level from Dr. Willis' unique perspective, this book should be a good read for you with lots of useful information. For newbie breeders, this book can represent an information overload but well worth purchasing as a research resource.
Dr. Willis does give a 'nod' to the average pet owner with useful information like feeding and training. However, if you are an average Berner Pet owner or new buyer, with no aspirations toward breeding your dog, 2/3 of this book may be relatively useless information for you. If this is you, spend your money on a different and better book for newbies in Berners.
Also, an experienced Berner breeder/exhibitor/researcher must be prepared to deal with (and look beyond) the very apparent arrogance that permeates this writer's work to the value of what good information is definitely presented (for the most part).
I will say that a good portion of the genetic and other breeding related information presented here is above what may be found in other hardcore Berner books.
If you're a Berner breeder, this book is a MUST HAVE as a reference.
If you're an average Berner person, another Berner book will probably be of more use to you.