Gnoll Teeth Successor Quest?

[Nazran]

I turned in about 37 BB Gnoll teeth yesterday. Starting at level 10 with 2 yellow bubs. That basically got me to level 11 with almost 3 yellows. I would say it was worth it because while collecting the 37 teeth I went 9 to 10 and plus teeth got me to 11. I suspect the turn in xp is getting to the point of diminishing returns though.

I always enjoyed the mobs I kill to have some bonus xp quest too like belts and teeth. Where would be my next likely 13~17ish area I can hunt that has a dropped xp hand in component where the hand in is worth doing? I seem to remember something in halas and everfrost?

Any suggestions?