[PF] Eidolons Natural Attacks

[Jack Zander]

Let's say I have an 8th level summoner, and I've given my quadruped eidolon an extra head, the claws evolution, an extra bite evolution, and spent an extra point to give my bite attack 1.5 times str.

None of these attacks suffer an attack penalty because they are all primary attacks, correct? As such, they all receive full str to damage too, except for the bite attacks which BOTH get 1.5 times damage. (Or does that extra point need to be applied to EACH bite attack?)

When I use power attack, does the augmented bite attack(s) get the improved damage as well? If I use a feat or evolution to increase bite damage, does that apply to each bite?

[Andvare]

As I read it, you have to buy an evolution for each bite, but a feat increases all of the attack type.

And the improved bite attack strength is multiplied outside of any feat AFAIK, so any other increase stacks, but doesn't get multiplied.

Edit: You are correct in that none of them suffer an attack penalty.