While Schrödinger's cat thought experiment serves a greater purpose than animal cruelty enjoyment, one of the possible results is a dead cat. Gruesome or not is one's appreciation, but you will always find someone joking about "oh boy this guy must have hated cats".
Which leads to a simple question, why did Schrödinger choose a cat in the first place, instead of, say, a lamb or a goldfish?
The only thing I was able to find online so far is some idle-guessing-looking "Pictures of Cats" website which doesn't seem really trustworthy (here). Is there a more reliable source?