Well the Equus is a hard tame,even a t-rex is easier but you will need around 30-60 carrots so to get that you will have to plant some get a medium plant crop and in order to the seeds go to the nearest forest and keep gathering plants until you get the seeds plant the seeds with fertilizer inside the plant crops.
This creature is a pain to tame but worth it. When I first got it I was like “Now, what in the world am I going to do with this?” Then I realized, it is great for knocking out wild Dino’s if you are short on tranq arrows (knocked out a lvl 120 sarco with 3 back kicks). It is also good for a mobile narcotic maker. Just put some rotten meat in this bad boy and run around getting narcoberries and use it’s saddle to make all the narcotics you want. Bam!!! Then you got all the taming supplies you need to go get some other Dino’s.
You might want to take some anti-nausea medicine before trying to tame this thing because it just runs in circles (for me at least, and on mobile). A lvl50 took like an hour of running in circles. It was very painful.
But sorta worth it because it’s a mobile mortar&pestle and now I can lasso people.
Quick tip: I was trying to tame one at my house and it bucked me off and my other tames thought it was hurting me so they killed it. Long story short, put all your other tames on passive if you want to tame it at your house.
To tame one of these creatures, you would need berries or crops. The best is just Rockarrot. Approach one with the feeding item on the last item slot. Feed it and ride it. You'll need to press the action button (E for PC players) for everytime they stopped moving or the icon on the right flashes, prompting you to use it.
To get a 100% taming efficiency on this creature, avoid spamming the buttons and carefully timing your action button. Make sure that your surroundings are clear and there are not too many threats. They often run off into random areas that tends to be near a Giga territory.
They often spawn in large open fields so that is best to look for one. Good luck and have a good one.
You can feed it then use a bola (which doesn’t lower effectiveness) and after that use fence foundations and walls to keep it in place and ride it for the duration of the tame. No need for it to run around randomly.