Check out this company ... Preserved Pets. I just lost my pet ... and this thought did cross my mind -- but personally -- I decided it would be too upsetting to have my pet not moving in the living room ... But, for someone who would relish this ...
They use a freeze drying method ... Here is some info directly from the site:
What is the method of Freeze Drying?
Freeze drying is a type of preservation that removes liquid and moisture from an object that is frozen, by using a slow vacuum process. The freeze drying will continue until all of the liquid is evaporated. Once this process is completed the pet you love so much will be with you forever....
Why not choose traditional taxidermy over Freeze Drying?
Taxidermy typically uses forms based upon an animals size and type and may not be able to meet the needs of pet preservation. Taxidermists wont usually work on pets since it is very difficult to make your pet look like your pet....Some taxidermists can supply and make custom forms, however they require a long lead-time and a higher cost is incurred.
How long does it take?
Typically 2-4 months based upon the individual pet. The positive outcome of your pet is what is most important to us at PreservedPets.com, so being rushed would not be an option, unless special arrangements have been made. This pet is going to last forever and PreservedPets.com take the utmost pride and respects the beloved pet you want to be with you always.... There are other companies that have turn around times stretching out to 10 plus months. Why would you want to wait that long. Our unique process allows us a faster turn around time while keeping the skeleton intact as other companies do. Our pets will not shrivel up over time and will back that by offering a one year warranty if they do we will re do your pet. We are the only company to offer such a warranty.