This story is on some levels random sillyness, but at the same time a gripping read.
In some ways its also a reality check. We're faced with the concept of humans treated the way we treat our great apes in the labs and the like, and we're faced with just how intelligent and capable these beings we class along with 'animals' are.
Unfortunately i had seen the films and had the 'twist' blown for me, but someone unaware of this book might possibly maybe be intrigued and enthralled at the turn of events!
Anyway, given that i obviously can't be bothered to write a proper review, its a good read and one that deserves your attention. It's only 200 pages long and won't take too much of your time, should you dislike it.