I only know a VERY IMPORTANT (/probj) piece of it...
Simon (in horror mode) took not one, but TWO bites out of Brud with his enormous ahh mouth like he was one of those brownie rolls. A small one on his torso, exposing his ribs, and a big one on his HEAD. And get this: BRUD SURVIVED. His brain is so small, that the bite MISSED it. Now he's just confusedly doing his thing with a big hole in his nearly-empty skull.