This Raven Skull prints in parts that snap together. It prints support free. It looks great when displayed on a wall with the BONEHEADS Display Mount, which you can also download for free on Thingiverse.
If you like this model, you might also like the rest of the skulls in our BONEHEADS collection. You can find them here: http://www.3DKitbash.com/boneheads.
Here's a demo by Quincy: http://youtu.be/WEhLNP82IOA
Additional details: Completed Skull is about 4.5 inches long. Printable in about 2 hours. 7-8% Infill tested well. Snaps together. No glue, smoothing, no supports needed.