This is a theory I suddenly came up with while reading the last volumes many years ago. I really have nothing to support it, besides the fact that some of the dragons did die within the storyline's past. It would also explain the appearance of the Bones in a very logical way anyway. * Support? This is Wild Mass Guessing! You don't need support! Just give us your pet theory and we're good. * Actually, that would explain why the Bones can talk to animals -- it becomes clear later in the comic that most humans can't, only the ones who are particularly attuned with the Dreaming.