Okay, here is what I want to know.
Zombies are re-animated flesh. So, If a zombie eats a regular living person, the regular guy is infected, right? I would also assume that any piece of flesh would be animated, since the regular organs and stuff are unnecessary.
When a zombie eats a regular person, I would think they would have to digest them, too. Waste is obviously a by-product of digestion.
So, is zombie poop animated? It is flesh, after all. Oh, sure, it wouldn't pose much of a threat, but just the same.
Or, do zombies eat flesh just for something to do, and not actually utilize it for nutritional value? Even so, I would think they would still have to eliminate the extra somehow, or they would explode from gorging themselves.
either way, we are doomed. animated zombie poop AHHHHHHH!!!!!!!!