The 3D griffin model which can be downloaded here has been created by importing Heraldic Griffin 2D design to Rhino 3D CAD software where T splines plugin has been used to create the 3D model. This is not a model of a complete griffin body, but a bas-relief (low relief sculpture) whose shape has been taken from an old coat of arms.
If you are into heraldry, and also have a CNC engraving machine, then this 3D model of the griffin could be the right choice for you! You can make it a relief, or use it as a design element for your more complex relief project.