Bring extra and be prepared tbh I just tamed a 150 Rex and even though it says on thing on here it's recommended but I spent more than 4 hours starving time for this Rex always be propared and efficient
So my experience with this beast was horrifying but I knocked it out it took so much tranq arrows it took 30 tranq arrows and I ran fast with the Brontos because there were lots of dinos with the brontosaurus then it was attacking the other dinos then I shot it a lot then it fell asleep because the thing it was attacking a a tank it was an ankylo so that’s my experience with a rex.
Just tamed one I will tell you my experience, so I found one and shot it with tranc DARTS (but tranc arrows work just as well although you need a few more :)) and it kept on getting deststracted by other Dino's which made it not attack me, so after I knocd it out I killed the other animals attacking the unconchis body with my Pump shotgun and gave it raw meat and a couple of bio-toxins and boom I got Rexy I hoped this helps on your next Rex tame
I recommend using a scorpion to tame it, pump all levels into health on the scorpion. Then just attack the Rex but with 10 to 20 seconds in between hits, DO NOT pump anything into dm. Also this is what I use to tame literally everything, and it doesn’t even cost anything. Pls put this up in chat for everyone to go “oh that’s not a bad idea” 👌😄👍