User blog comment:Shawty71/Why Zombies are impossible/@comment-1407184-20100913220746/@comment-1407184-20100914142420

Being cereal here, though: Yes, the traditional "Undead" zombie? Impossible. But, going along with what Nightmirage said, the Infected from 28 Days later are plausible, therefore, so are the L4D Infected. Well, Common Infected. I suppose a Tank is... Plausible, but only just. The idea of becoming infected and then bloating up is plausible, but the whole puking idea isn't really. Charger? Same general idea as the Tank, except that I don't think it would have the mental capacity to think of slamming someone into the ground. Hunter? An Infected that sits on you and rips you to pieces? Sure, I don't see why not. The pouncing, though? Doubt it. I don't know where I really stand with the Witch, considering her only non-human trait is the desire to kill humans and the incredible strength and nails, so... Perhaps. However, the Smoker, Jockey, and Spitter are far out of the realm of possibility.