There is a prod to Toothless' mind. Castiel isn't on the same floor right now - he's outside, scouting, trying to find a source for this, something to fight, anything that allows him to be proactive. Not that he has much hope, but Castiel dislikes the useless waiting he is confined to so often in this place.

The prod is coming from some distance away, but there is concern behind it. Castiel is worried about his draconic friend. The angel imagines someone depending on fresh food, this particular situation must be very hard to handle.