If you don't have megatheriums for some reason, you can use nearly any of the larger strong creatures. I did it with 7 rexes, all wild caught (from lvl 130 to lvl 150) and then leveled up. 6 of them had around 10k HP and 500% meele, and the 7th had 20k HP and around 900% meele. Not a single one of them lost even half of it's HP. I play on xbox singleplayer, but if I know-how it right levels and stats are the same for me as for PC and other console players.

Good luck for the giant bee! πŸ˜„

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