Trowa had been looking at the cat when he was at the window, but as the door opened, his eyes instinctively went towards the sound and movement. And he might have been one of the few people who was not concerned in the least to see a lion walking in. The orange tatters told him new arrival. Huh, so they pulled animals here as well for inmates.
Trowa knew enough about animal nature to tell he was on edge, which could be for obvious reasons. Having just arrived was definitely cause for being on edge. New place, new things around. Naturally the other animals around him were more on edge now that a lion had just walked in and he didn't blame them for that either. Of course the bots that patrolled were there to look after them so a few probably wandered over closer to them.
Hearing him speak did get a look of surprise though. It didn't last long.
"This? I don't know what they call it, but it looks like a dragon to me."
And since this lion could talk to him easier than his normal connection to them... "Is there anything I can help you get?"