: Their relationship is built on mutual vulnerability—Hiccup loses a leg and Toothless a tail fin—making them literally and figuratively incomplete without each other. Key Differences: Books vs. Movies
: Instead of killing a rare Night Fury dragon (named Toothless ) that he downed, Hiccup chooses to help it. 1-How to train your dragon
While both versions follow Hiccup's journey to heroism, they differ significantly in tone and world-building: 1-How to train your dragon