Form of Dragon: Do I keep existing Natural Attacks?

[Marko]

Now, I realize that using the Form of a Dragon might override a pre-existing bite, claw or wing attack, but say I have a gore attack as well. Do I keep that?

The instance I'm talking about is that I have a Half orc Dragon Disciple/Sorceror Barbarian who has a bite attack and, when he rages, gains a Gore attack and two claw attacks. He'd use his form of the dragon 1 Sp to gain the form of a dragon, and then he rages. Would he gain the gore attack on top of the attacks he was getting?

[Winston Colt]

Yes he would.

Using a polymorph spell will change his shape, loosing the DD bite but gaining another bite, 2x claws and 2x wing attacks. Raging he will gain a gore and 2x claws.

Leaving him with a bite, gore, 2x claws and 2x wing attacks.

Under Transmutation (polymorph) p.212 of the crb:
You also lose any class features that depend upon form, but those that allow you to add features (such as sorcerers that can grow claws) still function.

So you can change into a dragon then rage and become a demonic dragon with a gore.

[Dennis Baker]

I have a gore attack as well. Do I keep that?

No.

Magic Chapter under Polymorph wrote:

While under the effects of a polymorph spell, you lose all extraordinary and supernatural abilities that depend on your original form (such as keen senses, scent, and darkvision), as well as any natural attacks and movement types possessed by your original form.

Edit: Hmm... actually, if it's a class ability that manifests as an Su, it's probably good.

[blackbloodtroll]

Someone casts Form of the Dragon on you, then you Rage, activate your Rage Power, and gain a Gore attack, in addition to your other gained natural attacks.

That's how it works.

[Marko]

Cool! Thank you very much for the assistance.

[MechE_]

Form of the Dragon has a range of personal so nobody else can cast form of the dragon on you. However, I don't think that changes anything - what bbt said should be correct.