IFS Dragons
Many of the fractal curves usually created with turtle graphics,
have related fractals created by Iterated Function Systems.
These images are all variations on Heighway's Dragon curve,
created with a two transform IFS.

These two are the same basic dragon shape,
with priority on a different transform.
The full range of turtle dragons have IFS counterparts.
Simply rotating one of the transforms makes even more variations.
All of these are just simple changes in the shape of the dragon, there are
many other interesting things you can do with dragons.
All of these images were created using an IFS program called
Chaos.