I love Patterson's books, and I've loved his cooperative endeavors with other authors as well. Still, this book seemed a bit preposterous and silly -- and this is from an avid reader of fantasy and sci-fi! The performance was very good, and the book had a decent flow and suspenseful feel. Heck, I didn't even mind the ending. Nevertheless, this seemed to be one of those "Attack of the Killer Tomatoes" type of things that I just couldn't quite take seriously enough to enjoy, and I'm pretty sure it wasn't meant to be comical. I'll certainly read the NEXT Patterson book, hoping for more.

The plot. It was ridiculous. Chimpanzees, dogs, squirrels and rats in a pack hunting humans. Really?

Not much. I love James Patterson but my guess is Micharl Ledwidge must have written most of this book.

Good narration. The narration was probably the only thing that kept me listening.

Not cut but add. The chimpanzee kills the former girlfriend and then all of a sudden it's five years later. I needed to hear a little emotion.

I automatically purchase any James Patterson book. From now on I will pay more attention to the co-author.

The book starts off promising with detail,suspense and a likable protagonist. But somewhere in the middle it jumps the shark and skims to an ending. The begining is entertaining in a lite, B-movie kind of way but ultimately falls flat. Since most people listening to the story are not living on the Serengeti, lion and croc attacks do not equal apocalypse. I just could not imagine riots and economic collapse because all of the zoo animals suddenly escaped and started hunting people. But what should have been frightening, family pets suddenly going “rabid”, hoards of rats making coordinated attacks, packs of wolves attacking rural dwellers was not scary either. The cause of the eco-catastrophe is an interesting premise but the book did not deliver the suspense and chills one would expect. And the solution was so contrived and throw together it was laughable. I think if Mr. Patterson would have spent more time developing the story it could have been way better.

Listening to this book became a chore.....I felt obligated to keep listening because there was once "good" writing/reading ....I kept hoping the story line would evolve into a Patterson's past terrific story.......is he writing toooooo much tooooo soon....churning out predictable chapters lacking resources to vast to be believable........
Looking forward to the return of the author James Patterson .........

Okay, great premise for a story..then *letdown*..The performer has the cocky sounding attitude that fits the character and dialogue but the dialogue tries too hard to be clever and come up with a wisecrack suitable for every situation.
The story was more like an abridged version and that would be okay if it had been sold that way, but it felt like something was missing. Maybe James Patterson/Michael Ledwidge have run their collaboration course and need to give it a rest if this is what they are going to churn out.
I was disappointed and won't buy any more of the stories from these authors. Sometimes, Mr Patterson, maybe quailty should be of more importance than quantity.

I love Patterson, but this was a stretch. The narration was good, and it kept my attention enough to finish it, but this was not a "Winner"

A different story direction. It started out good, but got a little ridiculous the further into the book we went.

Make it more believable - It was far more science fiction than I like.

Yes, normally these authors pen great books, but this book is a loser for them.

kept me on adge all the way thru.

never listened to him before.

i wanted to hear how it ended.

This book had (in my opinion) such low scientific credibility that it made it hard to get through. I did enjoy the main character, though. I found the 'solution' to be a relatively simple one, and certainly not something that should have taken so long to figure out. Without giving away any spoilers (I hope) I also find it rather ridiculous that what would affect an animal in an urban zoo would also affect animals in very far-away and primitive locations at practically simultaneous times. The writing itself was very good, but the whole plot was weak, and I was disappointed.