For full Unicorn taming details, get the taming calculator app.
To tame the Unicorn, you must mount it immediately after the first feeding. Tap the action button each time you're prompted to feed again. Reminder for Mobile players: Your Dododex taming multiplier should always be set to 1.75x for ARK Mobile. Use 17.5x for Soothing Balm.
Putting a unicorn near your feet eggs will up chances of twins, triplets, and mutations! Their poop can be used to lure in the whales which gives you eerie candy blueprint(it’s more expensive then buying some:c ) but you need to tame with griffin kibble, levels 1-40 only need one per taming, if it’s higher use two just incase
I encountered one on Ragnarok, freaked out tamed it and was happily riding it back to my base when a stupid Raptor decided "I'm about to ruin this man's career" and killed my Unicorn. I have yet to find another one and I have a gravestone for my lost Charlie.
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. PLEASE UP THIS
Just so you know I got a level 305 unicorn I'm telling the truth btw so good stuff i mean not even godzilla can beat it btw I'm in single player on xbox I put setting stats for my single player infinity for taming and infinity for attack and infinity for weight so who wouldn't wanna join my tribe the gigas