The Gronckle is a fictional dragon species from the animated series How to Train Your Dragon. Known for its stout body and rocky appearance, the Gronckle has a unique ability to eat and digest various types of minerals, which helps it produce explosive fireballs. Gronckles are typically depicted as friendly and loyal creatures, often forming strong bonds with their human companions. They are characterized by their small wings and large, round eyes, making them appear somewhat clumsy in flight. Despite this, they are capable of impressive aerial maneuvers when needed.