Perih Vashai wants you to watch an old sabertooth die and bring her back his bones.
Go to Sauromugue Champaign (L-10), 3 Sabertooth Tigers wait outside the cave. You can ride a chocobo into the cave to avoid them, but bring along an Instant Warp Scroll if you do not want to fight them on the way out.
Wait for Old Sabertooth to die naturally (~ 5 minutes). He will not aggro you if you stay at the back of the cave. If you accidentally kill him, just re-examine and he will pop again.
Examine the bones and bring the Old Tiger's Fang back to Perih to complete the quest.
Client: Perih Vashai (Vashai's residence, Windurst Woods) Summary:In order to become a truly great hunter, one must be accepted by mother nature. In order for that to happen, one must gain the fang of a tiger, the fanged king. But it does not sound like any old fang will do...