The concept of werewolves being kidnapped and forced into cage fighting is a favorite of mine (all of my favorite concepts are oddly specific like this) so I was really excited about this book.
In a world where there are more of these children each others think humans but who are on par with us intellectually and can contribute to society where do you draw the line between human and animal? Jim Gavin upped the ante by taking bullfighting and replacing the bull with werewolves; so we have a real world example of legal animal abuse replacing the animal with one we can relate to emotionally and intellectually.
Not to say that this book is preachy or political. It is a horror beach read; fast, violent, but still smart. It is, of course, not perfect by any means but in an arena (pun intended) all its own.