This book is actually really good, I'm amazed that this person was a speech writer for Bush. His critiques of the abysmal hunting culture of his own Republican party are scathing, described in graphic detail from his "undercover" visit to Safari Club International, and made me realize that things on that side are even worse than I already thought.
He also is aware of some of the same Biblical passages I've used in religious arguments for animal rights. I'm only about 70 pages in and I'm impressed.
Scully is not vegan but vegetarian. However he is an anti-factory-farm vegetarian (so he's not justifying male calves used for veal etc) ...I didn't know what to expect when starting this book but I like to be able to argue animal rights from numerous angles, even those I don't identify with and Dominion delivers.