The Walking Dead amputation tricks to prevent zombie bites are well established, but FTWD has only rewritten the rules for apocalyptic limb removal. Fear the Walking Dead We’ve rewritten the rules for amputating limbs to prevent zombie bites, making the trick much more dangerous than before. Even those who are casually aware of zombies know that biting from the undead is not good news.of walking DeadIn the universe, direct chops are 100% deadly … even if no one can understand why. Because the entire population is already infected with the virus, bites do not allow the direct passage of zombie pathogens, and many believe that bacteria in the zombie’s mouth will kill them. But that doesn’t make sense either. zombie walking Dead It is a death sentence.