To fix the topology of the baby dragon, we will go through the process of retopology. Retopology (also known as retopo, or sometimes just retop for short) is the process of building new topology on top of a model that has bad topology. This is almost always necessary after completing a high-resolution (thousands or millions of polygons) sculpture.
The process is not particularly complicated: we create new polygons and snap them to the surface of the high-res model. When we're finished, we will have constructed a new version of the model that has good topology at a low resolution (a few hundred or a couple of thousand polygons). You can see the results of this process in the following diagram:
The baby dragon before and after the retopology process (left side 1,882,102 tris; right side 23,868 tris)
After we create the low-resolution...