How to tame a meg on mobile:

You will need: Bary w/ saddle, A crossbow, and(of course) a wild meg near the shoreline

1.Find one near the shore, shouldn’t be too hard

2:Grab your bary and ride it

3.Once in water, wait for the meg to aggro and attack something. A swimming turtle is prefered bc they have a large hp pool

4.Shoot the meg as it fights. If the Dino is still alive, kill it.

5.Feed it and boom u have a meg!

This is how I tamed my first meg rusty on my single player, it may not be as effective on PvP