[MDL ED] How to make a corpse pig head in Model editor?

[Romulator]

With some imagination, you can put the pig into the ground with it's head sticking up, set it as a static object, and add some blood decals to it to make it look like you only have the head of the pig there.

Otherwise, you would need to edit the model itself, which can be done in Blender or Maya I believe. Don't ask me about that kind of stuff though, because I have no idea how to use that stuff.