I don't get it. How come the walkers/biters are still able to walk around and be active even after 1-2y ears with absolutely no sustainance i.e food or water?
Trioxin zombies get what they need from living brains. There are other kinds of undead, some have a virus/parisite that uses the lifeless corpse as a host to seek other forms of sustanice. (Doctor Bowes Syrum) Others become a tool used by a supernatural force (necronomicon Exmortis, book of the dead) Then there is the puzzle box that works almost in the same way.
It's important to know what type of undead creature or creatures your dealing with. They all have the potiental for harming the living but some are less a danger, like the ones who actually do have a heartbeat, their heart beats once or twice a month. they can eat regular food for energy, but tend to prefer meat and have been known to get sick from non meat foods like donuts.
Every living person should check their pulse, blood pressure and or heartbeat once a week to verify that they are in fact still alive. Many of the walking dead don't even realize they are in fact dead right away.
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