Pearl by Josh Malerman (Bird Box).
It’s about a pig on a small farm that can seep into your mind and make you do and see terrible things. I picked it up after reading Bird Box and a few other books of his, which I enjoyed. I expected to give up on it based on the silly 80s horror movie premise, but the book is truly demented and creepy and I felt existentially weird after reading it
My jar steak always comes out great!