When taming them it’s easier to ride them and give them one minor soothing balm and rock arrows until it’s tamed but kill anything that could hurt them I didn’t do that with my first one and a baryons killed it
I usually build a simple fence foundation and railing pen to use for passive tames. Then I’ll just take an Argy or a Dino able to carry them and drop them into the pen. That way they cant run half way across the map. Up if this helps you (:
If you don't have an RG and you want a pony, just do the exact thing every equestrian on the planet knows NOT to do, and come up directly behind it, feed carrot, back away. Repeat. It will take forever and no, when I tried to use a balm it did not work because balms are only for KO.