Yeah, I got the idea from the labrat at Turbo Squid. I downloaded the frozen model and it had about 125000 polygons. Way too much for such a model. Thus I decided to create the rat on my own with with 1/70th the amount of polygons and yet maintain the same amount of detail thus making it more ususable. Therefore instead of freezing the sub-divided model, I simple metaformed it at level 3. This aided me in keeping the detail and yet making more usable and easier to edit rig and or remodel.