I'm a colony dweller (of course I'm a human man) living on planet 999, and I actually have one of these T-Rexes as a pet. I'm gonna tell you guys, they aren't all that hard to keep, since they'll do most of the work themselves. I especially find them useful for protection against tree crawlers (those weird four-limbed humanoid lizard things that live in the rainforests). Our rifles can only do so much to them.