You have trained your tail into a powerful weapon, and wield it with deadly skill.
Benefit(s): You gain a tail swipe attack. If used as part of a full-attack action, the attack is made at your full base attack bonus – 5. If the tail swipe hits, it deals 1d4 points of damage (assuming you are Medium) + 1/2 your Strength modifier. If you confirm a critical hit against a target with your tail swipe, as a free action you can attempt a trip combat maneuver against that target.
Pathfinder Roleplaying Game Monster Codex © 2014, Paizo Inc.; Authors: Dennis Baker, Jesse Benner, Logan Bonner, Jason Bulmahn, Ross Byers, John Compton, Robert N. Emerson, Jonathan H. Keith, Dale C. McCoy, Jr., Mark Moreland, Tom Phillips, Stephen Radney-MacFarland, Sean K Reynolds, Thomas M. Reid, Patrick Renie, Mark Seifter, Tork Shaw, Neil Spicer, Owen K.C. Stephens, and Russ Taylor.