Do you want a boss killer ? Well I got you , first we need too prepare !
Firstly , get your tranq equipment , tranq darts , arrows and shocking tranqs work the best in my opinion ( use toxicant arrows if on mobile ) also , I would suggest bringing good weapons to shoot the tranqs out of a mastercraft or ascendant work best
You can use a trap if you want but it’s not needed if you have ok stam and speed , Rex’s aren’t the fastest of creatures .
Now that you have everything ready it’s time to find a good Rex ! You can find them almost everywhere from my experiences.
Now if you don’t use a trap all you gotta do it’s play ring around the Rosie . Once knocked out feed prime , mutton or there desired kibble and then boom ! You have yourself an boss killing machine