I just tamed one in the dead island

That's was easy

1-get some kibbles or meat and a tapejara or ptera

2-go to dead island with a trap (5 stone dino gateway +2 dino gates)

3-go to the little island in the south of dead island (its not very dangerous)

4-build your trap

5-clean the around area

6-get the attention of one argy (while on feet)

7-go inside the trap

8-get out and place the gate

9-knock him with tranq arrow or dart

10-feed it and wait

11-run away from this hell