|David knott 242|
I had hoped that the familiar folio would address this issue. Does anyone know if it does?
It doesn't. I searched my PDF for all occurrences of "intelligence" and "Improved Familiar" and found nothing on this subject.
However, I did pick up one item that implies that a familiar does not keep the intelligence of its original creature listing if it is higher. The Mauler familiar archetype has a MAXIMUM intelligence of 6, which means that if it is an improved familiar, it most likely lost intelligence.
On the other hand, the Sage familiar archetype has an intelligence of 5 + effective wizard level of master, so it is less likely to lose intelligence even at the lowest levels.
Of course, since both of these archetypes replace the "speak with animals of its kind" special ability, I am not sure whether either of them can be applied to most improved familiars in the first place.