Oekaki
Threaded image-based forums similar to image boards, but designed for posting original doodles created using the oekaki software.
Treehouse of the Secret Moon
Posted by GreenReaper on Sun 9 May 2010 - 16:32NSFW cub-oriented oekaki. Underage characters, often in mature or sexual situations – much like the MUCK location.
Deep Thinking Perverts
Posted by GreenReaper on Sun 10 Jan 2010 - 20:33Beginner to intermediate adult oekaki. Also hosts Coonaki, a less-mature site with a strong raccoon bias. See the archives for the better works.
The Furry Shack
Posted by GreenReaper on Sun 10 Jan 2010 - 20:26Generic beginners' furry oekaki. Highly variable quality; some human content.
Bluefurry Oekaki
Posted by GreenReaper on Sun 10 Jan 2010 - 20:18Furry and Digimon/Pokemon/video game characters. Registration required for access to adult work.
PapayaKitty Oekaki
Posted by GreenReaper on Wed 30 Dec 2009 - 17:47PurpleKecleon's oekaki board. Typically features various Pokémon, Neopets, and the host's own "flower kitties".