Cover Characteristics: Book Covers featuring Zombies

So I seem to be on a bit of a zombie kick lately, reading and adding to my TBR quite a few books that have zombies as main characters or love interests, and even some that have the more stereotypical, shambling, post-apocalyptic kind of zombies. I've never been a huge fan of zombies, even though I have started giving their books more of a chance, but that doesn't mean I can't be a fan of their...