How to tame a giga without a trap in 6 steps

1. lure it into the redwood with a thyla

2. climb on a tree that cannot be harvested

3. knock it out with tranq or schocking tranq darts

4. put prime meat, mutton or extraordinary kibble in it´s inventory

5. kill all enemies around it when it´s eating

6. when it´s ready then craft a saddle and ride it