Here are some selected meshes generated by TetGen. Click on each icons to see the list of full-sized pictures. These pictures are created by TetView, a graphic program for viewing inputs and outputs of TetGen. The binary version is freely available.
Most sources of the examples can be found in the repository of Inria. In this repository, more than 20000 3D models are available in various formats. Among them, surface meshes saved in .mesh file format can be directly used as input of TetGen.