Step 7: Brain transplants
Once the hearts had been moved about, it was just a matter of time before more drastic measures would happen. While the heads could be swapped, some bears found the process a little crude and wanted to simply swap the brains and keep the rest of the head.
Here you can see pictures from one of the earliest brain transplants. The brain has a little bit of exposure to the outside, but as long as the bear doesn't think too hard it will be OK.