Taratula Hawk
The tarantula hawk wasp has a rather rare and brutal style of reproduction. It does so by stinging a tarantula on its back and laying an egg inside the hole. The egg eventually hatched into a larva that goes on to dig into the tarantula and eat all of its internal organs. As soon as the tarantula is hollow on the inside, the larva bursts out of the abdomen and goes on to repeat this vicious cycle.