You can upload your own custom avatar if you like, or choose one from the gallery. If you choose to upload your own avatar, please try to keep it tasteful and appropriate.

I've uploaded some basic WoW-themed gallery avatars, including the icons for the different pet families. (Look for "Display Gallery" on the Edit Avatar page, then use the drop-down menu to look at the different categories.) I'd be happy to upload more gallery avatars if anyone wants them.