Very easy to tame all I usually use is:

2 bolas (just in case you miss)

3-5 meat piles (about 50 atleast in each)

Bio toxin (98-200)

Narcotic (if you want)

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Steps:

Find one!

Wait till it gets on the ground

Make sure (raptors/Rex/dilos) arent near it

Bola it!!

Give it meat and bio toxin or narcotics(50-100 atleast)

Then whenever it’s unconsciousness goes down just feed it bio toxins!

Up if this helps you!! <3