Rare Asian 'unicorn' sighted, dies in captivity[ Fri, 17 Sep 2010 15:30:16 GMT ]One of the rarest animals in the world has been sighted for the first time in more than 10 years, according to the government of Laos. Sightings of the animal, called a saola, are so rare that the creature has been likened to a unicorn, despite the fact that it has two horns, not one.