Actually, he was not all that thin. He started dehydrated, but several times we ran a tube down his throat and filled him up with Pedialyte. Yeah, the same stuff you use on your little sick kiddies....electrolytes, a few very simple digestible calories, and hydration. Works wonders!
By the time we got him shipped off to the rehabber, he was up on his feet when we opened the crate door and he was giving a threatening hiss. I started feeding him by my fingers and ended by feeding him at the end of 14" tongs! Nasty blighter even started trying to grab with his death-dealing-dagger-laden footsies!Glad to be rid of Norbert*.
*For you Harry Potter fans and Hagrid-ophiles.