The Black Footed Ferret

Most biologists believe Tasmanian tigers win extinct sometime in the 1950s while others think they might have held on into the 21st century. The most optimistic researchers are Barry Brook, a mammal ecologist from the University of Tasmania. He believes there's a 10% chance that the Tasmanian tiger is still alive but is ready to admit their extinct if a clear photograph isn't produced by the year 2031.