Zombies, But Real — and Happening in Nature

Below, a handful of real-world examples reveals how certain parasites hijack behavior—turning hosts into living puppets. These stories aren’t fiction; they’re the stuff of skilled evolutionary manipulation. 1. Cordyceps Fungus and Ants A terrifying example of "extended phenotype" manipulation: the fungus Ophiocordyceps unilateralis infects carpenter ants, penetrating their exoskeleton, infiltrating their bodies, and triggering convulsions that drop them to the forest floor. The infected ant climbs a plant stem, latches its mandibles onto a leaf about 25 cm above the ground, and locks in place—a location optimized for fungal growth and spore dispersal. Eventually, a fruiting body erupts from the ant’s head to release spores that infect more ants. 2. Cordyceps Fungus and Caterpillars This fungus doesn’t just target ants—it also zombifies caterpillars. Using a hijacked enzyme, the fungus disrupts the caterpillar's blood sugar regulation, convincing it to eat constantl...