Slade speculation. Formerly a discussion on Natural attacks.

[Gralamin]

I'm asking this for two reasons.

1. I'm playing in a game where I have a tail attack I didn't think I was going to use since a greatsword does more damage
2. I was curious whether a Monk who got polymorphed into say, a twelve headed hydra would get both his natural attacks and his unarmed strikes.

I read that they did stack in a thread about natural attacks that was on here a day or two ago and decided I should ask.

Well heres how it usually works:
You have a Primary weapon and secondary weapons. Your Primary weapon is almost always your manufactured weapon (Such as unarmed Strikes, greatsword, etc.). Usually you have the highest attack bonus with your Primary weapon, and your secondaries are at -5. When full attacking, you make one attack for each weapon (Exception: Manufactured weapons get iterative attacks. If you have multiple, see Multiweapon fighting / Two-weapon Fighting), unless your primary weapon gets in the way (IE: You can not stab someone with a greatsword and claw their face off unless you have 4+ arms).