"Fire ants wander aimlessly away from the mound.
Eventually their heads fall off, and they die."
Hot damn. I will never understand people who think biology is boring.
Fire ants are causing trouble in southern and southeastern USA. To control them biologically, parasitic phorid flies have been introduced. The flies lay eggs in the ants and the results have been quoted above. Read the whole grisly story of horror here.
"The maggot that hatches inside the ant eats away at the brain, and the ant starts exhibiting what some might say is zombie-like behavior."
As it happens, I've been playing games like Left 4 Dead and Plants vs Zombies lately. And then life comes along and proves itself stranger than fiction. I love it.