Gronckle

Slow Flying
The Gronckle is, admittedly, a heftier dragon, and while its small wings are perfect for hovering, they slow the dragon down as it lacks the larger wings needed to fly faster. It doesn't help that Gronckles tend to be lazier than most dragons.

Trivia

 * Gronckles can make Gronckle Iron if fed certain rocks. This metal is stronger but also lighter than most metals.