The largest of them, yes. Each of them only bonds with one rider at a time.

( Or so Viserys had claimed in his stories. Given how Drogon seems so attuned to her emotional state, she wouldn't be surprised if that were in fact the truth. )

So far as seems to be permitted. I'm surprised that by now the perimeter hasn't been pushed forward, and more territory occupied.

( Why leave it to the monsters? A question begging to be answered; and asked, too, apparently. )