Fly that Turns Ants into ZOMBIES.

I have no idea why i have just copied this and pasted it here, but this is sort of what happens when you study for a Biology exam.
This is really cool. check out the video.
The second one is of the jewel wasp.
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The phorid fly turns fire ants into zombies by laying eggs inside them. When the larvae hatch, they eat their way to the ant's brain, which they also eat, leaving the fiery ants to wander around like zombies before dying.

"At some point, the ant gets up and starts wandering," said Rob Plowes, a research associate at UT.

The maggot eventually migrates into the ant's head, but Plowes said he "wouldn't use the word 'control' to describe what is happening. There is no brain left in the ant, and the ant just starts wandering aimlessly. This wandering stage goes on for about two weeks."

About a month after the egg is laid, the ant's head falls off and the fly emerges ready to attack any foraging ants away from the mound and lay eggs. "