If you go to the western approach, there’s a massive cliff there. You can ligit just stand there and shoot these guys with tranq arrows because they can’t climb a vertical cliff. 90% succes rate, 10% chance that an argy will come kill ur rexy boi, so always have normal arrows too, just in case.

No traps needed, just take a flying mount and tranqs, and land somewhere it can’t get you, like the top of a cliff. If not cliffs or high rocks are in the area, you can just fly away from it, dismount, shoot it a few times, then remount, and repeat the process. Hope this helped! :)

I suggest to search for one near a medium-high cliff. They can’t climb most the stuff you can’t jump over actually. Kill all things ( carnivore) in the area. I suggest bringing a flying boi or spine boi for this one. Now, just shoot away. Oh, and he likes fish meat. So use fore mentioned spine boi for that. Bring like, 5 narcotics. And like 10-50 tranquilizer darts. Or 100 bow shoot sleep arrows. Y'all good now. ( and for damage, yes. A rex is definitely top 5. )

Like every other carnivore, it depends on smell not eyesight. Killed one with a sword(easy mode btw), and all my armour broke. Accidentally ran into a therizinosaur, which almost killed me(I thank the Rex for its huge amount of hide) repaired my armour beforehand and the therizinosaur slew my armour.

If you want to make a Rex kibble farm, I think I can help.

So you want a low level male Rex. [around 10-15]

And then you should get at least 3 females, also low levels. [around 10-15]

And then boom you can get an easy kibble farm!

[Use this tame to tame Quetzal!]

hope it helped!