People tend to either love or hate Toothless' design. I'll admit, I wasn't crazy about the weird wormy face when I saw the first movie, but he grew on me. These wings are based on the bluish glow he got while challenging the Alpha in the second movie. And of course, that cool tail fin :3

Hand-carved and painted from 7-oz leather and painted with acrylics with interference blue pigments.
Toothless is © DreamWorks