Ishi, the last of the Yahi Indians was a lone man who wandered into Lassen Peak,California in 1911. He had wandered unknown with his tribe for many years undetected. When he found himself alone and staving he came in to seek help. Yes, that was over 100 years ago. But, if there were another species that was human like, one could only hope they have been watching what we do to each other and stay out of sight for survival purposes. Or there is the possibility just like the last Yahi, the species died out from disease or exposure to the toxins we put out there.
With that being said... A Unicorn is just a horse with a point of view...
interesting fact...
the unicorn is also the national animal of scotland.
i am not claiming that this makes them a valid species,but i thought that it was interesting,and wondered just how they came to the point of claiming it as the symbol for their country.