I do not know if PF has change the spell description (I haven't had reason to check) but it USED specify that the creature would ONLY fight to defend itself and only when it was being attacked.I don't remember that. Must have been a LONG time ago. (2nd edition or older?)
I remember that as still being as of 3.5, but again it has been a while since I checked the books. I'll try to remember to do so tonight.