This is a CT scan of a toy elephant. It has a pull string for a tail that, when pulled and released, results in the entire elephant jiggling. The jiggle "engine" can be clearly seen inside the body of the elephant tilted at an angle of 45°. The eyes, spots, smile, and seams are all sewn with a heavy thread. The diffuse cloud-like contents is stuffing or "fluff".

A Quicktime movie of this elephant can be viewed by clicking the link below. Note the distribution of fluff and the good natured smile.