For those coming here being concerned about Linus' pet cat: She is fine and thriving. There are however very short mentions of past incidents that led to 'dead fish' or non-serious talk about 'liking dead things'. As someone who hardly tolerates animal cruelty and death in books and films, I didn't feel the need to actually mention this trigger warning. However, having the Antichrist and a pet cat on the loose, I was concerned finding that others have set warnings for animal deaths wishing someone would have written that for my benefit.