Dissection is to science what being behind the scenes is to theater: it helps us to understand what we are unable to see. In the framework of a project on animal dissection headed by the SEMM (Education and Multimedia Services of the University Lille 1) and funded by the UNISCIEL (Online Sciences University), 3DMedicus handled some very distinct requests. For each project, we had to depict the interior mechanisms of different animals in all their complexity and bring to light the secrets of living things. Our final objective? To bring the virtual as close to the real as possible.