It is complex! Like, spiritually they go together pretty well, oft-villified monsters who hang out in caves and horde things. Visually, though, most of the more intrinsic elements of either design tends to be at odds with the other, spiders are usually more compact where dragons sprawl out. Which is probably why I've only ever seen a handful of attempts. They are hard to jut together, and usually at best you get something looking like one cosplaying the other. Tried to come up with a couple compromises.
