Many eons ago, unicorns walked the earth...
Or at least these single horned beasts did. According to Nature.com, ancient humans lived alongside these 9000 pound horned creatures, but they unfortunately didn't survive the post-Ice Age climate change.
The rhinoceros Elasmotherium sibiricum, known as the ‘Siberian unicorn’, was believed to have gone extinct around 200,000 years ago.
Unfortunately, these "unicorns" were not as pretty as they are often depicted in fairy tales. They were basically large, hairy rhinos.
They didn't die out as a result of humans hunting them, however. They were so massive with such a large, strangely proportioned head that they could only eat grass at a certain height. And when the climate changed and the grasses they ate died out, they couldn't survive.
Do you wish you could have seen one of these in the wild?