Taming a wild Rex is no easy feat, and it will take quite some time to successfully tame one. On average, it will take approximately 30 minutes to tame a 150 Rex, but this can vary depending on the individual Rex and the taming method used. Keep in mind that taming a Rex is not an instantaneous process, and it will take some patience to see it through. But once you've successfully tamed your very own Rex, the bond you share will be unbreakable!