Overall, a good kids film. Truly, enjoyable for a younger audience. However, as a 3D artist, the dragon, should be the last dragon disney makes, it looks really, really stupid.
On a actual line of critique, the film is held up by great characters from the main cast to the tertiary cast. Except the title dragon. I found her voice, very unsuited and her analogs into the "trendy" world of today excessive, and extremely out of place for the character…