If it won’t allow you to feed it, knock it out and let it wake up then try again. Most likely due to the fact someone else tried to tame it before. Also, it tells you when to feed it at the bottom corner of your screen.

Must be level 10 or higher to tame press

FOR MOBILE USERS:sadly YOU CAN ONLY PASSIVE TAME IT WITH GRIFFIN KIBBLE.
It Wont eat any crops or berries and you cant tame it like eqqus.

Devs Must Fix This.

Go to the Highlands on Ragnarok with a wyvern or Argy, you should see the unicorn soon, most likely being chased, catch it with the flyer and fly somewhere to tame it(a raft base is a good one)

People, the griffin kibble and hallucinogenic poop is only on mobile. Disregard this, PC and Console people. I wish.

Thses unicorns are the most demanding most absurd tame on mobile it can only take Griffin kibble the devs need to change this this is too much grind for a skinned equus

Ark Mobile- Tameable by Griffin Kibble. So bummed to learn this after catching and trying to feed crops.

So they don't have any use other than a chem bunch when equipped with a saddle, however they spawn 3 at any one time on Valguero. So easy to find there.

For all console or PC players wear a full gillie suit if it spots you it wont let you feed it.

I was just walking around with my giga for getting meat when i saw one of them infront me i rushed to base to get my quets and took it to my base and tame it it took 3 griffin kibble with 10 balm but it was worth it