Apart from being an exciting, interesting and unputdownable novel it has that 'extra' for those working within zoos. Written by someone who has worked in zoos it actually gives the 'feel' of the place without the glaring mistakes made by outsiders.
I have read both books by this author and enjoyed both immensely. Being able to empathise with the characters and 'recognise' some people makes the whole adventure a greater experience.
Buy for a friend, a colleague or for yourself.