Looking over the Druid Animal Companion table, I noticed an oddity. The table lists the number of feats and skill points the animal should have, along with pointing out Ability Score Increases at every 4 HD. However, the Ability Score increase is listed as an Ex ability. Does this mean it is a SECOND Ability Score increase every 4th HD (every creature gets a uncategorized ability score increase every 4 HD, after all)? Or is it meant as a reminder that they get the normal increase? If this is the case, why is it listed as an Ex ability, whereas the feats and skill points are not given any classification?
Given the massive amounts of Str and Dex animal companions already get, I suspect that this is meant to be just a reminder about the normal increase, but the fact that it is explicitly called out as an Ex ability strikes me as very strange. Consider, for example, if a party sorcerer cast a Polymorph spell (like, say, Plant Shape or Elemental Body) on a Druid's animal companion. Arguably, these Ex ability score increases are "Extraordinary abilities that depend on form" (since they apply only to animals since Druids can only have animals as their companions) and thus would go away under any polymorph spell, whereas the uncategorized ability score boosts everyone gets would not.
So, the options seem to either be to not call those Ex and say that they are just a reminder about the one all creatures get at every 4 HD, OR leave them Ex and say "Yes, you really get two" and be ready to deal with any oddities that having them as Ex abilities might cause. Or are all the ability score increases Ex abilities? There are basically no rules for how they work in Pathfinder (it just sorta says you get them, look at the table), and I don't want to look it up under 3.5 just to see how they should work here.
