In celebration of 20 years of How to Train Your Dragon, this special commemorative edition features the original - now classic - How to Train Your Dragon story with exclusive content, including some rare Viking material (featuring Hiccup Horrendous Haddock III's birth certificate!) and a hilarious brand new adventure called How to Train Your Hogfly starring fan favourites as well as exciting new dragons. Fully illustrated with Cressida Cowell's artwork, this is a MUST HAVE for anyone who grew up reading and loving How to Train Your Dragon, as well as the perfect introduction for new readers to this beloved, classic series.