You approach him in the chilly room. He shows you a look of concern and uncertainty.

You cannot let him go that easely. After all this place is the best for him. Perfectly designed.
He can't help but have a dissapointed look on his face.
He is very curious about the outside world after all, so it is only natural.
You explain to him that you do this for his sake; to keep him safe and far away from harm.
He understands and trusts you. He knows you do this because you care.
You must drag the cage to put him back in.