Easy tame.... Just make a 2x3 stone foundation and cover 3 high with doorframes on the sides. And 2 high on either end. Place wooden ramps (They're temporary but easy to make and repair) just get aggro and run inside the trap. Takes about 30-45 tranq arrows from a mastercraft longneck. On mobile the kibble is easy enough to make. Get a fast mount with knockback. Go to fars peak and run around pulmonoscorpions to find their eggs. The kibble needs prime jerky and longrass so if you have that set up, rush a few caves give it a soothing balm and under level 70 only needs one kibble. So that's a convenient benchmark. It's expensive to build the trap big enough to get the red out so once tamed just request it back to base. Unless a Giga or enemy tribe shows up it will be untouched if left alone.

Whether you want to tame or kill this strategy works. You need four people two Tapejares. Two people fly two people get on the back and shoot it. one person circle the Rex and one rests swap out now and then so you can keep you stamina up, or if you feel bold both circle it and shoot it.

So I see all these tips on how to tame a Rex. I was able to tame one by standing on a cliff and using about 40 tranquilizer arrows. Once it starts to run away, DO NOT BE AFRAID. Just chase after it and keep shooting it. IT WILL NOT CHASE YOU (at least it never does me). Once it becomes unconscious, dont just use any meat. Use Pulmonoscorpius kibble. I only needed 3.

The Rex said that the torpor rate I drop is high. I disagree. I have tamed two rexes with raw meat and I did not need to use any extra narcotics or narcoberries. All u need is a bow with around 40 to 50 tranq arrows, and meat of any kind. Find a rock that is high enough for u to shoot the Rex and knock it out,

Use a tame that can take a beating, like a thyla, preferably an imprinted one. Then use a really good crossbow, they reload quicker so as your tame takes the beating you don’t have to worry about it being killed as you are pelting the rexy with arrows. Then once it starts running you can take your time pelting it with arrows so you don’t kill the Rex you are taking.

1. Hit it with tranq darts or tranq arrows until it gets too drunk on tranqs and is knocked out.

2. Put lots of raw meat in it's inventory (if you don't have any just find a nearby dino to kill)

3. Remember to feed it narcotics to keep it from waking up while you're taming it

4. hooray you have a t rex now

I was out looking for high level rexs on what I like to call the Viking map. When I couldn’t find any good levels I went to the lava island and found a level 150 female Rex. I killed the low level that was with her and started shoting traq darts when she started running I had got so scared when she ran into lava. I stopped firing and luckily she got out before she died and I knocked her out and tamed her.