Legend of the Boneknapper Dragon is a 2010 animated short film by DreamWorks Animation that is a sequel to the feature film, How to Train Your Dragon.
The short was originally broadcast on television on October 14, 2010 on Cartoon Network, and released as a special feature on Blu-ray and double DVD edition of the original feature film on October 15, 2010.
The film follows Hiccup and his young fellows accompanying their mentor, Gobber, on a quest to kill the legendary Boneknapper Dragon.
The film opens with Gobber's house on fire and the Vikings and resident dragons getting it under control. Gobber is convinced that his old nemesis The Boneknapper Dragon, a giant, yet perfectly silent dragon (the only one with no roar) that clothes itself in bones for armor, is responsible. However no one else believes that the Boneknapper even exists, much less that it burned his house, especially when the evidence suggests that the fire was started by his underwear drying at his hearth and catching...