My daughter & I have only just started to mine this rich seam of animal knowledge. What a fabulous book! As to be expected from Nat Geo, the photos are superb, numerous, vivid & intimate. This book covers a huge range of creatures & has a staggering amount of facts & information. While this is obviously aimed at children, it has enough depth to be of use/interest right up to and including adulthood. Great for homework or just dipping into.