This project aimed to create an animated 3D printed hamster that captures its running motion. The hamster wheel assembly was designed with Solidworks and parameters like diameter, thickness, and length were optimized. Challenges included achieving minimum clearances between gears and designing an aesthetically pleasing hamster. Lessons included using a top-down assembly approach and considering all possible configurations to adapt to challenges. The final prototype met requirements and cost $85.75 to 3D print.