Speed: very fast
Weapons: terrifying swiveling drill
Defence: drill, teeth, claws.
Fear Factor: 9
"Driller Dragons are an extraodinary phenomenon because they have a single drill at the end of their nose which they can revolve at amazing speed. This drill cuts through wood as if it were water. Diller Dragons are often used as guard dragons. Diller Dragon eggs are very spiky, but lukily the the mother has a thick-skinned bottom."
from A Hero's Guide To Deadly dragons by Cressida Cowell.