Quote Originally Posted by curious aardvark View Post
very very cool.

So pla for the internal 'bones' and tpe for the outer layers for flexibility and grip.
Yes, for this you will need dual extruder, the easier "poor man's" solution is to go for variable density with solid TPU as the bones and low density infill TPU outer for the skin and soft tissue. Use Slic3r's modifier meshes to achieve this.