Taming these Bad Boys are easy for Low Level Players!

Step1: Find One (Obvious).

Step2: Get a bunch of Tranq Darts Ready! (You can Unlock them at Level 21.)

Step3: Stand afar and let the T-Rex fight some random Dino Like a Triceratops.

Step4: Start shooting Tranq Once he Kills and Harvests Their Meat

Step5: Once it goes down, Put some Meat after some time and you can Keep Feeding Narcoberries and Berries(Any) by Feeding them both 1 by 1.

Step6: Now put some Meat in Whenever you think it is Hungry enough.

Step7: Waiting game begins.

Step8: Enjoy The Little Beast.