This is a silly question but I've been wondering for a while now how dragons reproduce. We know that they lay eggs, but what exactly triggers this? Hraesvelgr has a brood which means he had to have had dragonets at some point, but the only mate we ever hear about him taking is Shiva, who was an Elezen and wouldn't have been able to reproduce with him. This leads me to wonder if dragons reproduce asexually. Then again, we also hear about the Meracydian dragons being descendants of Tiamat and Bahamut, so I can't be sure. The fact that dragons don't seem to have an incest taboo (Tiamat and Bahamut were brood-siblings as well as mates) makes me even more confused as to how their reproduction works. Is there some bit of lore I'm missing here?