So I was level 81 looking for a Rex and found a lv 85 male I built a trap 16 stone door frames 4 wooden ramps and 4 stone foundations for the trap it escaped once but got back in and boo that thing was a pain it took almost all my tranq arrows and broke my crossbow and resorted to fists then I knocked it out and it was at 49hp I speed feed it meat to get its health back up then now I have a lv 125 male Rex!

I was bombarded by raptors while taming this but I managed to tame it after that I wondered how to get it to herbivore island and when I made him swim he swam fast, and way faster than me.

I would run away but not far to aggravate it to follow me and knock it out with either darts, tranq arrows, or a slingshot.

The Rex good at:

-Tank

-Prime meat Collector

-causing other low level dino to poop when roar (only heard, not seen it with my very eye yet)

-wipeing dino life

But Rex bad at:

-Small attack radius which mean other creature can hit it from the side or back without you hitting them

-have hard time trying to turn around

-Can swim but lose oxygen while doing it

That all i know for know

Because rexes are slow, you can keep up with it and knock it out when it fleeing so they are easy to tame

Easiest way to find them is in snow biome on the island map, i found alot of them there

Build a tower of metal

Then shoot 100 tranq at’em

Run and keep shooting

Shooting

Shooting shooting and btw only shoot and run when he runs which is a while

When he’s down shove meat down his throat and give narcotics

Narcotics

Narcotics Narcotics

Boom a rex tamed and ready up if helpful

If on multiplayer, you can use an argentavis (because of the stamina) in order to pursue one while taming. Have a guy get picked up and fly that guy right over the Rex.

I recommend the person shooting to go in third person to aim. It’s pretty hard to see otherwise.

You won’t even need bear traps!

(I’m quite sure this works for pretty much anything, but at the point where you’re taming a rex, you should probably already have an argy on you.)

Just be careful when chasing it when it’s low on torpor. Try to get it stuck—it may be a little faster than you.

I tamed my high level rex(435) in the Arctic i was trying to find a high level direwolf then i saw it, so i tried to knock it out although i'm only lvl 36 i'm pretty confident cuz i have good ascendant bow and they're easy to get stuck lol, i'm pretty happy actually cuz i have an ascendant rex saddle from the january promo. I'll use my rex to kill the alpha rex that spawned near my base when i'm level 13+ i think, i can use an otter too and do spyglass glitch but i tried it many times but my otter always die cuz of stomp damage (i reverted my save)

I also found a level 435 spino near green obelisk i'll try to tame it next, i'll prolly tank it with my rex since the nearest high cliff was a bit far from where it spawned