Picked up the following link thanks to Spore’s Facebook page. Ocean Quigley wrote a guide to help those who happen to have Maya export their creatures from the game into their 3D program.
With a little time and patience, you can go from this:
The exporter will create a collada file (a .dae file), along with the specular, diffuse and normal textures. It will place them in your “My documents/My Spore Creations/Creatures/” directory
Now you can load it up in any 3D application that supports Collada. The plugins for most standard 3D applications (Maya, Max, Blender, Modo among others) can be found here: