Your tail is either thick and heavy enough to serve as a weapon, or else is adorned with barbs or quills that weaponize its lashing length.
Prerequisite(s): Grasping Tail, you must have a tail.
Benefit(s): You gain a tail slap natural attack that deals damage as appropriate for your size (1d6 points for a Medium creature, or 1d4 points for a small creature). When you first gain this feat, choose bludgeoning, piercing, or slashing; this is the type of damage your tail inflicts, and it cannot be later changed. Due to the inherent awkwardness of attacking with your tail, you can’t make a tail slap attack and other natural weapon attacks as part of the same full attack. Treat your tail slap attack as a secondary attack if you also attack with a manufactured weapon as part of a full-attack action.
Pathfinder Roleplaying Game Planar Adventures © 2018, Paizo Inc.; Authors: Robert Brookes, John Compton, Paris Crenshaw, Eleanor Ferron, Thurston Hillman, James Jacobs, Isabelle Lee, Lyz Liddell, Ron Lundeen, Joe Pasini, Lacy Pellazar, Jessica Price, Mark Seifter, F. Wesley Schneider, Todd Stewart, James L. Sutter, and Linda Zayas-Palmer.