This is the Springy Baby Bunyip. The Bunyip is a cryptid, ‘not yet’ found in Australia. The adults are not so cute looking, but the babies are just fine. This ‘articulated’ model is made with springs so that it bounces from side to side rather than turns or ‘slithers’ freely. I have included an STL file and a color 3MF file under the Download STL/CAD Files section. This comes with a free commercial license for those who wish to sell their printed models. 
NOTE: It is best to use PETG or another tougher material with this model so that the springs will stand up to use.