How to Train Your Dragon (animation)/Trivia

Hey, It's That Voice!: Kevin Sandursky tries to impress his dad, King Leonidas. He also goes to dragon-slaying school with Betty Suarez, Red Mist, Seth, Hud, and Maggie Mayhem. Mr. Wick is also their mentor, and the old Doctor is also involved somehow. Phew!
- And in the Japanese dub, Astrid is Tsumugi Kotobuki and Stoick is Gauron.
  - The video game features Nolan North as Stoick! James Arnold Taylor is Fishlegs, while only T.J. Miller (Tuffnut) reprises his film role. And Tara Strong is an additional voice.
- Mom, Phineas and Ferb are training dragons! If you don't get it, Hiccup is Phineas in France, Ferb in Brazil.
Throw It In: Both the lines "dat da da, we're dead" and "thank-you for nothing, you useless reptile" were ad-libbed by Jay Baruchel. Other lines were also improvised, including much of Snotlout's dialogue in the scene where Gobber tells the teens how he lost his limbs.
What Could Have Been: Crossing over with Executive Meddling, the film was originally going to be very close to the book, considerably Lighter and Softer than the end result; concept art shows a much younger Hiccup, Snotlout as a girl, a much smaller Toothless, Astrid with huge braids giving her a Helga look, and a lot more gags. Hiccup's mom was going to be in the film and act as a voice of reason. The directors thought she took away from Hiccup and Stoic's relationship so they cut her out.