Board Thread:General Discussions/@comment-24981691-20140525033847/@comment-9152162-20140719221413

Godzilla and the Mutos feed on radiation (gasses,elements, etc). But, as the food cycle goes Godzilla was at the top of the food chain and would eat the Mutos or any of the other creatures. The Mutos ate radiation and anything at the bottom like the monster whose sekeltal reamains that we saw at the begigning of the movie.