Zombies are real, and nature is teeming with ... “It’s extremely widespread across the animal kingdom.” Speaking from his home in San Francisco, Simon explains how a species of parasitic ...

Some species of viruses, fungi, protozoans, wasps, and tapeworms take over the brains and actions of the animals and insects ... which turn their hosts into zombies. This is usually controlled ...

Animals do not turn into zombies — only humans do. At least, that seems to be the rule so far in AMC's sci-fi zombie thriller, "The Walking Dead" (which airs Sundays at 9 p.m. EST/8 p.m. CST).