If it's not a horse, it's not a unicorn.
“Its legs were longer than those of other rhinos and were adapted for galloping, giving it a horse-like gait.”
Close enough for me!
> In heraldry, a unicorn is often depicted as a horse with a goat's cloven hooves and beard
https://en.wikipedia.org/wiki/Unicorn#Heraldry
BTW, I highly recommend those tapestries in the Musee Moyenage - the Museum of The Middle Ages, if you're visiting Paris and are into medieval stuff.
https://www.musee-moyenage.fr/collection/oeuvre/la-dame-a-la...
Like an underwater unicorn
They've got a kick-ass facial horn
They're the Jedi of the sea
They stop Cthulhu eating ye