[@Sola] The "saurus" is basically a holdover from the old days of paleontology, and Tyrannosaurus and its relatives were members of [url=https://en.wikipedia.org/wiki/Coelurosauria]Coelurosauria[/url], which were more closely related to birds than other archosaurs like crocodiles. And while it's only a theory that adult T. rexes had feathers, the babies certainly had at least some kind of down.

Paleontology aside, knowing Rexy, if she was willing to show Blue mercy for not being afraid of a much larger carnivore (and helping kill it), then I'm sure she gave that lion due credit for having 'nads of steel.