I had left a cup I had used for coffee out on the counter when I left for work yesterday morning. I came home and my cat was going fucking nuclear. I tried to reason with her with treats, but I picked her up and looked in her eyes and saw MADNESS! She proceeded to wrestle from my grip, landing on the floor and bolting off into her favorite paper grocery bag. A second later she bolted to her *CLEAN* litter box and begain just fucking tossing litter out of the box onto the kitchen floor. After I yelled at her she ran to my shoes and stuck her head inside one of them.
I ended up just going in my room while it burned off. Was coffee the cause? HRM.
