Easiest way to tame...
1.Get a good flyer
2.Tranquilliser dart are best but i tamed it with tranq arrow in crossbow.(almost 20 shots)
3.kibble is best but u can also use raw prime meet.
4.Have bio toxin or narcotics handy I didnt use it because it’s torpid is like 1700 and I used minor soothing balm with raw prime meet.
1.Ride ur flyer and make Rex follow u to some cliffs (I tamed it near snow where there is a cliff and some pond which is perfect place to find a Rex and tame it without any disturbance like raptors,wolfs,etc...)
2.Stand on cliff and start shooting tranqs.
3.Once it starts to run u can chase it on foot it might be getting down on next shot once it starts to run.
4.Use soothing balm or whatever plan u have to tame it.
IF ITS SNOW KEEP SOME FIRE TORCHES, FIREPLACES,HANDY TO KEEP U WARM.
Everyone says: do IT in a mountain. But you have to look out tgat the rex cant climb up. They are good climbers and have a large hitbox. I've lost my saber who couldnt climbe because het was too small and died to the rex, (i followed him a couple seconds later)
If you use the bear trap strategy which is if you lead it into a Dino gateway that is shaped in a triangle and with a bear trap in the middle (Large Beartrap) and when it is stuck you must put a dinogate behind it to trap it and then knock out. (hope this helped and "If" I win could it be an Xbox voucher, thanks.)
Hav as many traps set up as u can, a few hundred tranq arrows and a decent cross bow. I can tame a good 5 lvl 130+ rexes a day, honestly rexes are soo easy once uve dun it once. O but don’t even bother doin it without mutton or kibble cause it will take forever and come out crap