Native to Vietnam, the saola is a horned species so illusive, it’s been nicknamed the Asian unicorn. A breeding program could be the best chance of the species’ survival … if researchers can even find 12 saola. Scientists discover about 18,000 new species every year, yet some still evade researchers’ watchful eyes. While the saola is by no means “new,” the species avoids human contact so well that scientists aren’t even sure if they still exist. Min Duc Le, co-author of the study, explains in the press release that researchers previously tracked saola through DNA in water and even leeches.