If your on mobile and can’t find one of these guys start the tame equus pursuit and walk or fly around the island and eventually a arrow will show up on the top left of your screen. If you follow that then you will find an equus or two. Upvoote if you found this helpful.

When taming the equus on Xbox One, when it says to use the E button, you must press Y for it to feed when it bucks.

I had a hard time with this

Only one unicorn Equus can exist at a time in a world, so start looking!

Put this higher !!So if you play mobile I found 3 in the same spot okay so first do the volcano pursuit the one where it's the cave inside the pursuit should be south of the equator and in that general area if you look around you'll find them

Stop running horsey! All I want is to ride you and give you a butt load of carrots!

They spawn in grasslands and can spawn alone or up to a pack of 4. Raptors, carnos, and rexes can also spawn in grasslands so note that as soon as they spawn they might be getting attacked.

I saw a unicorn once stupid sabertooths

Can't find them? Grab your coconut shells and occasionally shout 'Ni!' - you'll find one before long

If hard to find on The Island, a herd seem to spawn near the red obelisk, green obelisk and the black sand area off the river next to the redwoods, I killed a bunch of low levels for some easy pelt and I came back after 10-15 minutes, after I found a 145 Equus. Hopefully you found this helpful.

When Equus hunting, ALWAYS go to the southern haven. Since there aren't any predators there, you have nothing to worry about. While you're there, it's great for metal runs. And if the Equus there are too low leveled, simply kill them, leave, wait for more to spawn, and hope for a higher level.