What you needs to do is.

Requirements: long neck rifle with darts. A flight. Know that you need to lead it home without getting you or it killed.

Step one: find the area near the snow if there's a rex there

Step 2: get on the big rock and shoot him once to get his attention

Step 3: keep shooting him until he's down but wait 5 seconds each

Step 4: have your taming rates high if you want to feed it raw meat (4 bites)

Step 5: get it home hehehe

Step 6: make a saddle and YOU GOT A REX BOOOOOOI

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