Not going to link it (can be easily found), but I saw there was a hoarders show episode where a person was storing multiple dead cats in their freezer.
Also I think they ran out of room so there were a few that didn't make it to the freezer that were decomposing in plastic bags at room temperature.
The rationale was that they were going to cremate the cats, which I guess is a thing some people do in some places like California since there are bans on burning them on your property?
Still, I found this example disgusting, fascinating, and motivating for me to clean up my comparative smaller messes.