At a foolishly past bedtime time I found "An Old McAllan", a greater dragon who seemed to have gone wild at the Sphynx in the Lost Lands; it's possible that someone abandoned him, but just in case it was an unintentional crash I sacrificed some honor and tamed him for safe keeping. Unfortunately my tamer doesn't have any free stable slots (the last was taken by a GD I found and am training up to sell) however you can log out and keep them with you, so I'll hold him for 2 days or so until someone either claims him back, or it looks like it's time to find a new home and let me use the character again...