Tropical carpenter ants (Camponotus leonardi) are turned into zombie ants when infected by the parasitic fungus (Ophiocordyceps unilateralis). Infected ants become erratic and zombie-like, and are manipulated by the fungus into dying at a spot that provides optimal conditions for fungal reproduction. New research looks at altered behavior patterns in zombie ants in Thailand and shows how the fungus manipulates ant behavior.