Scientists don't even know how many zeros a zillion has. I don't know why they would use a number that is not countable. It's like saying something is a billion-gazillion-bajillion. But that is what the scientists are saying about a rare all black penguin is.... a one-in-a-zillion mutation. Blacky was spotted in Antarctica by a National Geographic reporter. I bet I'm a one-in-a-zillion adorable Chorkie. There is not another one out there exactly like me!