It takes a bit. Red keeps looking back at the couch whenever Daud gestures at it, then back up to him again, as if working on putting the pieces together. It's obvious enough he wants him to stay on the couch, though 'guard' still isn't familiar. Staying on the couch, though, the dragonet is pretty sure he can manage that.

When Daud moves him down to the empty cushion, he does give a mournful cheep of sorts. Whether that's because of what else is on the couch or that it means 'hanging out with Daud' time is over is unknown, but he does clamber down off Daud's arm to the couch afterwards.

And there he'll flop over onto his side, much like a cat lounging around. Still watching Daud intently, but not making any move to leave that spot.