I don't know if anyone has pointed this out before, but I found some odd discrepancies in the size categories for natural weapons.
Under universal monster rules it shows the size categories quite plainly.
http://paizo.com/pathfinderRPG/prd/monsters/universalMonsterRules.html
(about halfway down the page under natural attacks)
A claw goes 2d6 garg to 2d8 colos. Makes sense. Then I found this.
"Improved Natural Attack
Attacks made by one of this creature's natural attacks leave vicious wounds.
Prerequisite: Natural weapon, base attack bonus +4.
Benefit: Choose one of the creature's natural attack forms (not an unarmed strike). The damage for this natural attack increases by one step on the following list, as if the creature's size had increased by one category. Damage dice increase as follows: 1d2, 1d3, 1d4, 1d6, 1d8, 2d6, 3d6, 4d6, 6d6, 8d6, 12d6.
A weapon or attack that deals 1d10 points of damage increases as follows: 1d10, 2d8, 3d8, 4d8, 6d8, 8d8, 12d8.
Special: This feat can be taken multiple times. Each time it is taken, it applies to a different natural attack."
I found this under monster feats. It shows a 2d6 jumping to a 3d6, and never dipping into the d8s again. I am super confused.
Also trying to calculate an eidolons slam, which is a d8. Under universal monster rules its only a d4...So I am unsure of where to find a reliable progression of size for natural weapons, and my eidolon will soon be taking large and having enlarge person on him, so it is kind of important I get this hammered down before I bring it to a game.
Oh and one last question regarding to how the improved natural attack feat and the eidolons improved natural attack evolution apply. I read it as applying to an attack form, meaning claw or bite or gore. My dm thought it may read as a single attack, example being a single claw out of a pair (or two pair). Any clarification anywhere?
Thank you everyone for the help!
