In a biological first, researchers in France have discovered a creature capable of giving birth to an entirely different species. It’s more than just the sort of hybrid births that might happen between a donkey and a female horse — making mules. The Mediterranean Harvest Ant actually bears eggs that can develop into two different kinds of ant species: its own, and one of an ant called Messor Structor. The World’s Gerry Hadden reports from a lab in Montpelier, France.