Well, the depictions and descriptions of zombies in the various games, movies, books, etc. tend to have at least some that are clearly suffering from some degree of decay rather than simple wear and tear, dehydration and the like. They just don’t decay more than that stage, whatever that stage is. It’s obviously a decision made for creep-factor rather than any sort of narrative consistency (and usually in media that’s not too concerned about narrative consistency anyways), but the fact that it makes no logic sense adds to the horror, however.
