I bought a female sulcata on KS a while back and when it showed up it had a severe underbite like its bottom jaw was set way back in the skull or shrunken. I assumed it was diet\vitamin related as her shell was uncommenly soft for being 15 lbs. She was from up north where i dont think she got alot of sunlight. I stuck her outside and by the end of the summer her shell hardened up but the underbite never went away. She eats fine and breeds regulary. I was never very happy about the deal.