- The film is adapted from the children's book of the same name by Kleishida Cowell.
- The director of the film, Chris Sanders, left the Disney Animation Department at the end of 2006 because of a disagreement with the producer of "Lightning Dog" John Lasseter on the creation of "Lightning Dog", and later switched to DreamWorks. This film is him. The first director's work in DreamWorks.
- The character setting of the toothless dragon in the film is partly inspired by 2002's "Interstellar Baby", and the director of this cartoon is "How to Train Your Dragon" director Chris Sanders.
- The film also produced seven Olympic-related short films during the Winter Olympics, showing the "Viking Winter Olympics" in the 11th century.
- This time, Jay Baruchel, who voiced Hikap’s voice for the first time, said: “I’m ten years older than the character dubbed in this animation, but I don’t think there is a generation gap with him. The character is actually a projection of everyone’s youth."
How to Train Your Dragon behind the scenes gags
How to Train Your Dragon quotes
-
Hiccup: [to Toothless] We're leaving! Let's pack up. Looks like you and me are taking a little vacation. Forever.
[he bends over his pack]
Hiccup: Ah man.
[looking up, he sees Astrid sitting on a boulder, sharpening her axe]
Hiccup: Agh! What the... uh, uh, what are you doing here?
Astrid: I want to know what's going on.
[she jumps down and menaces him with the axe]
Astrid: No one just *gets* as good as you do. *Especially* you. Start talking! Are you training with someone?
Hiccup: Uh, uh, training? I didn't...
Astrid: [grabbing his flight gear] It better not involve *this*...
Hiccup: I, I know, this... looks really bad, but, you see, this is uh...
[there's a rustling behind them and she looks over his shoulder toward the noise]
Hiccup: [trying to distract her] Uh, you're right! You're right, you're right. I, I'm through with the lies, I've been making... outfits! So, you got me. It's time everyone knew. Drag me back, go ahead... here we go...
[she twists his arm, throwing him to the ground]
Hiccup: OW! Why would you *do* that?
Astrid: That's for the lies! And *that's*...
[she drops the butt of her axe on his chest]
Astrid: ... for everything else!
[Toothless emerges a few feet away]
Hiccup: Oh man...
Astrid: [gasps and throws them both to the ground] Get down!
[Toothless charges, she pushes Hiccup away and raises her axe]
Astrid: RUN! RUN!
Hiccup: [grabbing the axe and throwing it away] No! No! It's okay, it's okay!
[to Toothless]
Hiccup: She's a friend.
[to Astrid, holding Toothless back]
Hiccup: You scared him.
Astrid: *I* scared *him*? Who is "him"?
Hiccup: Uh... Astrid, Toothless! Toothless, Astrid.
[Toothless snarls, Astrid shakes her head in bewilderment and runs off]
Hiccup: Duh-duh-duh, we're dead!
-
Hiccup: [as Toothless gestures for him to get on] You got it, bud.
[He mounts Toothless, preparing to fly after the Green Death dragon]
Stoick: [grabbing Hiccup's arm] Hiccup!... I'm sorry. For-for everything.
Hiccup: Yeah, me too.
Stoick: You don't have to go up there.
Hiccup: [smiling] We're Vikings. It's an occupational hazard.
Stoick: [taking his hand] I'm proud to call you my son.
Hiccup: Thanks, Dad.
[takes off]