This morning in Things That Will Certainly Haunt Your Dreams, here are some catfish in France that have learned to hunt pigeons
. The fish, which are not native to the River Tarn where they now dwell, were introduced about three decades ago, and in the ensuing time, have apparently developed a hunting technique never before seen in the animals -- the fish loiter in shallow water near sandbars populated by pigeons and, when a wayward bird steps close enough, the catfish lunge at it, dragging their feathered prey back into the water with them.
You can check out the behavior in the video below, or you can just look directly at my worst nightmares if that is easier. Which I hope it's not.