National Geographic has a story about female phorid flies that plant their eggs into the torsos of fire ants.
The eggs hatch, the larva feeds until it reaches the ant’s head resulting in zombie ants.
The head pops off, the new fly escapes and here we go again.
Why does it always seem like it’s the insect world that does this kind of weird/gross/interesting stuff? Can you think of any other examples that are from the animal world that are as strange as this is?