The Dragon Tooth (sp) item is usable but does nothing. Likely the bug is its usability.

On the subject of dragons I killed the one the bard summons from the quest yet it drops nothing. Not sure if this is a bug, random chance, or working as intended.

Totally off topic; my poor pet dog finished it off (after hiding a safe distance away the entire battle), gained a bunch of levels, but no stats, pet dogs are useless unless they evolve at much later levels like pokemon. I had to fight a strong troll den to acquire a pet dog and frankly it was not worth it when I got far better and more useful loot from weaker monster dens. Maybe I am just more of a cat person.