Is It Predates the Rhinoceros?

I wonder if our idea of a unicorn is actually just a game of telephone version of an actual one horned rhinoceros. Or other kinds of weird megafauna because there were, that would have been in living- I mean the orach was stomping around Europe until the 17th century. There are no fossil evidence of a northern European aminal that would have had a single horn? A single horn? No, that's true. But it could have come from- It's just interesting that dragons and unicorns seem to appear throughout history many different places.