For a X-version BRING AS MUCH TRANQ THINGS AS POSSIBLE! Make USE A ICHY! I have used a Bary but it was to fast to get so i had to corner it, you could try the huge octo tame for grabbing but i doubt youd get that before a dunkleo but if you do...USE IT. Hope this helps -The NightWart
Very easy to tame if you know what your doing. First tame an Ichthyosaur. Then grab a crossbow and some tranq arrows and find one and knock it out. It is not be able to attack if you are on the Ichthy. As you are taming it, be sure to remain on the Ichthy unless feeding narcs, so other creature don’t hurt you.