nimisgod
LEW Judge
FrankTrollman said:Having natural weapons does not even count as having the improved unarmed strike feat - you's still need to get the feat prereqs the normal way.
-Frank
The Sword and Fist mentions that if you have claws, a bite, a tail, etc. (pg 83), then you qualify as having the Improved Unarmed Strike Feat.
Of course, S&F is non-core so that may or may not apply depending on the GM.