I made a new 3d-model for a minimal fursuit head-base with a movable lower jaw.
You can get version 6 of the model at Thingiverse:
http://www.thingiverse.com/thing:1196457

The print took about 10 hours at 0.2mm layer height - it weights 128g.

The teeth were hand-sculpted (made with Plaast).
The shape of the ears was cut from a thick felt sheet and sewed to a rubber band.

I tried another method to make fursuit eyes this time:
painted the eyes digitally,
printed the eyes on a piece of paper,
painted the back of the paper black,
laminated the paper,
drilled many tiny holes in the parts of the eye that are not white