Tongue Eating Louse

For sheer yuk factor this is very hard to beat. This insect (okay, strictly speaking this crustacean) doesn’t kill at all… IT JUST EATS TONGUES.

The Tongue Eating Louse infant floats around till it gets eaten by a fish – or simply floats in through its gills. It latches onto the fish’s tongue and begins to eat it. The more it eats, the more it grows and after a few weeks, it has not only eaten away the entire tongue, but it actually replaces the organ in the fish’s mouth. It lives in the mouth and functions as a new transplant tongue, helping the fish to swallow its food, while occasionally opening its own gob to feed itself.