John doesn't stop him, but he makes a note to point out that he brought the beastiary with him. Maybe there's something in there about it?

"The end of the world..." a pause, a long one, as he thinks about it. He doesn't like where his thoughts take him. It's too heavy for this walk, especially with people looking at him so strangely and most of his focus going to the strange tingling that's going on as his fingers and haunches and tentacle tips start returning feeling from the warmth. They aren't to the fire, but it's already better.

But he did notice the question Arthur dodged.

"How long have you been here, Arthur?" Long enough to have a home, after all.