If you are reading this series because you like the TV show I will say that they are very much different from the book. Some of the characters have the same names and professions but that is where the similarity ends between the two. However, I have only watched the first season so I cannot say if the second season is more like the books.
If You are interested in reading this book then you will want to pick up the first book in this series Zoo, as it explains how we as humans have destroyed the balance of the world and what should be done in order to rectify it.
James Patterson is back with his Zoo type of an Apocalypse where everything is about to become even more personal:
Oz thought he had found a way to save the human race, but the human is anything but adaptive as a whole. The animals are more violent than ever and humans are their prey. Never stray far from your home, make sure every access point into the home is blocked and never never go out at night unless you have a death wish. However, Oz could never have predicted the way the mutation would change and now it is even more deadly.
I was interested in this follow up "book" to see where Patterson was going to take the story, mutation and characters and he took it in ways that I never expected. Did there need to be a separate book for zoo 2, probably not, as this is not that long of a read. However, I think I understand why he decided to have separate book (you know minus the additional money) as the way in which the"mutation" changes within this book clearly is something very different from the first. However, this book is extremely short, I believe about 150 pages so It could have been added to the first book no problem.
The animals did not seem as smart as they were in the first book and I missed the point of view from Attila.I think that these added more depth to the overall story and even if we did not have points of view from Attila Patterson could have selected a different animal from each place that was visited and had even just one chapter from it's point of view and how they viewed the human and the plan.
The one thing that Patterson does a great job in this book is pointing out how much we as a species have come to rely too much on technology that we are unable to give it up (and yes I realize I am making this statement typing away on my laptop, while my smart phone is close by). It does make me wonder, would I be able to give it all up in order to save the human race? Would I be willing to go back the pre-technology age? It is really something to think on. So for those points in actually making me think while I am reading and reviewing this book I applaud Patterson for that.
Of course there is a cliff hanger at the end so I wonder if Zoo 3 is coming out any time soon, and I'll probably end up reading it just to see how far Patterson can take this series and his apocalypse idea. I guess I really do wonder if we could survive an animal uprising.