Editing Periodic Table of Dragons (section)

==Radon 86==
Radon dragons are the only variety of Fluid that is regularly found outside of the Arctic. The smallest of the dragons, only the size of a large cat at most, they make their homes in granite bedrock. Being the only Radiant Fluid dragon, little is known about their habits, and further study is complicated by the fact that they are highly territorial and do not let anyone near their homes, though some nests have been abandoned for reasons unknown and are hotbeds of exploration and study by those wizards seeking to understand these enigmatic creatures. 

Shorter than a man's knee, they are reddish, wingless creatures with heavy front legs and claws able to dig through most kinds of rock. They do not have scales, but their hide is thick enough to stop anything less than a crossbow and their blood is composed of the gas that they constantly exhale. They breathe a yellow-green flame which is toxic in enclosed spaces. 

Dwarven legend states that it is these creatures that drove them to the sea. When one of the larger dwarven cities accidentally disturbed a nest of the creatures, the Radons swarmed into their tunnels and into their halls through the connecting tunnels, poisoning the air with their breath and blood. From time to time another settlement will have a Radon outbreak, but they learned well; any community that is connected to another will have thick doors at each end of the underground road, though the majority of dwarven cities are connected by normal roads rather than underground tunnels.

They are suspected to be intelligent, but no one has managed to talk to one, though some dracologists have reported that they scrape their claws against the stone as a warning to go away.

There are occasional reports of a Uranium, Thorium or Radium dragon laying a Radon egg, and some suspect that this the origin of the creatures.