A guy named Cylas (his in-game name) as reached Master Bio-Engineer and can make Rancors and Kimogilas. If you were wondering, Kimogilas are EXTREMELY strong and big creatures that can only be BOUGHT (cannot be tamed because there are no babies) from a BE. These things won't be cheap, but I will help you get one if you really want one, zeal.
Here's a screen shot of a dead one
I've heard from a reliable source that BEs can make these things, but I'm not sure if they will work for you or not. But he's not sure.
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