Tamed mine between the swamp and redwoods. Took me long, not because of knockin' it out but, because I kept forgetting the structures for my trap and the first ones, I brought the wrong Argy ๐Ÿ˜‚ Then second I forgot my ramp. However it went well.

Just 3x3 foundations with 3 walls high, and ramp on and side, and you have a Rex trap.

More Rex Taming & KO Tips