Castiel was a little surprised when Dean moved to give him a hug. He returned it, making no move to let go until Dean did. It was rare for Dean to show such a display of affection and though Castiel still struggled with understanding human emotions, if Dean needed the comfort, he'd provide it.
"Many things disturbs humans." If angels could get headaches, Castiel would definitely have gotten one as he listened to Dean list off the people that were in this strange place and the events that have happened. "Dinosaurs. I have not seen those in millions of years. I can see how that can be unnerving to some humans."
"The Lucifer that is here? He has made no attempt to start the apocalypse? Does he know that Michael is here?"