You are both a biped and a quadruped.

Prerequisites
Level 3 or 3 Hit Dice, Strength 13+, Must be in a hybrid form of humanoid and a quadruped animal.  The GM may make exceptions on other hybrid forms or the like.

Benefit
As a swift action that does not provoke attacks of opportunity you can go on all fours and gain the benefits of a quadruped.  As a quadruped you gain +5ft to your speed, +2 to your CMD vs being Tripped, you may use bite and claw attacks as normal, your carrying capacity increases as per a quadruped of your strength and size.  When in Quadruped mode you cannot use, wield, or carry anything in your hands.

Author's Note: There may be other drawbacks/perks of being a quadruped not covered here that I did not list.

Additional Ratings
Balance:	1 2 3 4 5 ( 1 Vote )
Utility:	1 2 3 4 5 ( 1 Vote )
Clarity:	1 2 3 4 5 ( 1 Vote )