I could have sworn Frontier did a video where they had 2 T.rexes in an enclosure, the one where they show the sound design and wrinkly skin. Weird how they changed it.
I made a bug post about how the social meter for the T.Rex was too small when compared to the Population meter (resulting in 2 Rexes causing the comfort to lower) but, they said Rexes were solitary despite the movies showing the contrary.