[His gaze pointedly slides to the so-far demure draconic mount.] And he put you to work here because this...unclaimed one doesn't seem to like staying in a stable.

Again, I suggest getting it out even for your own sake. Then he could have you doing something less tedious. And the rest of the mounts can stop being unsettled. [Notice he doesn't suggest he do it himself, of course. He's not looking to lose a hand. But he does start to wonder how much the hide of this thing could fetch in a market in Val Royeaux.]