You can change into a fox in addition to your other forms.
Special: A kitsune may select this feat any time she would gain a feat.
Benefit: You can take the form of a fox whose appearance is static and cannot be changed each time you assume this form. Your bite attack’s damage is reduced to 1d3 points of damage on a hit, but you gain a +10 racial bonus on Disguise checks made to appear as a fox. Changing from kitsune to fox shape is a standard action. This ability otherwise functions as beast shape II, and your ability scores change accordingly.
Fox Shape (Kitsune)
Section 15: Copyright Notice – Pathfinder Player Companion: Dragon Empires Primer
Pathfinder Player Companion: Dragon Empires Primer © 2011, Paizo Publishing, LLC; Authors: Tim Hitchcock and Colin McComb.