These are some examples of 3d-models that I made for 3d-printing (the photo in the middle is a 3d-printed head base with felt ears attached). Those models can be used to build a puppet-, plushie-, robot-, costume-, or fursuit-head. I did add some ventilation holes, that can also be used to attach fur. The lower jaws are movable. I released some of my models on Thingiverse - free to use for non-commercial purposes. You can change the size as you like.
My 3d-models https://www.thingiverse.com/Tioh/designs
Please do not sell prints of my models - that would create unfair competition for my friends who sell their 3d-printed head bases (not based on my models).
If you want more information on how to use them to build hand-puppets go to http://puppet.tioh.de/
More photos of finished 3d-prints are in my Livejournal https://tioh.livejournal.com/