Board Thread:Lore Discussion/@comment-5632187-20130119213241/@comment-16047389-20130826153200

Even if he is only a descendant, that doesn't mean he lacks the scales of immortality. We can clearly see that the Stone Dragon can't be killed, no matter how much he is attacked.

And LORD SADDLER is right, they weren't made of stone, they were covered in stone scales of immortality. Lord Gwynn and his knights used the sunlight spear miracle to peel the scales off the dragons, while Nito spread the poisonous miasma to their exposed skin, and the Witch of Izalith and her Daughters of Chaos created massive firestorms. If they were made of stone, they wouldn't bleed or be capable of being poisoned.

That said, I do not agree with DisHonorableClown's theory anymore than you. There is no evidence to imply he is correct. And considering that the first humans, giants, and lords didn't come out of the dark until AFTER the first flame and the Everlasting Dragons were living just fine before then says to me that their natural diet didn't consist of humans.