I can't recall exactly how long it took to read this book. We got it for Christmas. As you can imagine, it is parked next to the loo, so it gets read in instalments. It's quite amusing and has lots of interesting facts about poo, but unfortunately half the illustrations are sketches and not photos. This is weird. Surely, between the Internet and a worldwide network of zoos, the author could have tracked down actual photos of cougar shit and aardvark poop?