Another reptilian entry is the wyrm. Unlike dragons they don't have wings ... or legs ... being essentially giant snakes.
Author Morgan Smith talks about her take on this creature in her tale Skin Deep.
The inspiration for “Skin Deep” was an old Scandinavian folk tale. It had been rattling around in my brain for a few years, because it had all the elements I love: an archetypal theme, the potential for strong characters to flesh it out, and a beast that embodies some of our deepest fears and inner aspirations. When the idea of an anthology with fantasy beasts or creatures as the theme came along, it seemed the perfect opportunity to play with it. The version I first heard set it in the very late medieval/early modern period around 1500 AD, but I rather liked the idea of updating it and giving it a bit of Regency era spin.