When you Change Shape, you retain elements of your kitsune form, allowing you to speak in a fox form, use kitsune unarmed attacks in a tailless form, or gain a tail in your tailless form to use abilities that require one. You can Change Shape to alter the details of your hybrid form without fully changing into your true form or your alternate form. While in hybrid form, your foxlike features make it obvious that you aren't a normal humanoid.
Once per day, when you Change Shape into a fox, you can instead gain the effects of both the canine form of 5th-level animal form and 7th-level fiery body for 1 minute or until you shift back, whichever comes first. You can cast produce flame from the fiery body effect even though you're in a battle form.