Ever since How To Train Your Dragon was first released in 2010, Toothless immediately won over the audience’s hearts with his harmless yet fierce persona. Known as one of the rarest and fastest species of dragon out there, Toothless played a critical role in the film series as well as the books as Hiccup’s best friend. While we have seen him on-screen, Toothless has a whole lot of history in the books, and today, we will explore his origins and anatomy and tell you everything about him!