How long do zombies live?

Answer 1

Zombies themselves are not living. however, they are often reanimated by a virus, which is living, so it eventually REdies. You may be tempted to argue that a virus isn't a living thing, and you may be right, seeing how it doesnt reproduce by itself. Because a virus need living cells to reproduce, and zombies aren't living, the virus would eventually die out, thus de-animating the zombie. So the question becomes: how long do zombie-making viruses live? According to Max Brooks' Zombie survival guide, it takes about 3 to 5 years for the reanimated corpse to "die".