'Splendid stuff' Eva Ibbotson.

'A darkly comic and hugely inventive adventure ... it could be the next big thing' Eoin Colfer.

'The sequel had better come soon' Observer.

'Thrilling ... Written in a vivid, urgent style, its sense of loss at all the creatures we have lost or are losing may be as critical to the new generation as Tarka the Otter' Times.

'I haven't read a book this good and interesting since The Hunger Games ... an edge-of-your-seat fast-paced read' Guardian Children's website.

'Inventive, with laughs, tears and cliffhangers' Sunday Times.

'An action-packed, dystopian eco-thriller with memorable characters, both animal and human, and a powerful message about the interdependence of man and nature. A promising debut' Daily Mail.

'It's a grim but in no way depressing read, preaching hope amid dystopia' Financial Times.

'Gripping, original and memorable' Francesca Simon.