Easy tame. Just walk backwards and shoot your desired ammo. It won’t catch up to you, just be carful of any debris that you are near, as if you walk into it, the ankylo might land a strike! Once you’ve knocked it out (no headshot multiplier) just feed it some mejoberries and keep a couple narcotics on hand just in case (I don’t normally need any) wait a minute and voila you have your very own metal producing Dino!