This has nothing to do with dogs, but I am always up for a good 'animal in the freezer' story.
When I worked at Sea World, I had two roommates who worked in the bird department there. One of my roommates had an evil lovebird named Doogie who couldn't keep a wife. Every little lovebird wife she brought home for him would die. Eventually she clued into the fact that maybe evil Doogie was having a hand (wing?) in the deaths. So, she talked to someone at work and they offered to do a necropsy on one of the wives for her to determine a cause of death. So she popped the wife in the freezer until she could take it in to work with her...
...and promptly forgot about it. And the next wife... And so on.
We eventually had quite a little stack up in there. That was always fun to try to explain to our guests at a party who just wanted to get an ice cube..