Dragons are a species of semI sentient reptilian beings native to the Third Earth but originate from Bardia.They are prevalent in folklore of all three Earths but were nearly driven to extinction in Westeros from the Targaryen civil war known as the Dance Of Dragons two hundred a thirty years prior
They possess connections to the Force allowing them to communicate with Force users but otherwise they are only tamed by someone of Valyrian ancestry due to their genetic engineering by Snokes people