I left the cat on his own overnight because I had to go away for work, and I've come back to a pathetic little limping paw. I suspect he's suffering from you-left-me-to-starve-itis. Poor baby.
Join the bad owners club. I too am in trouble. Apparently I screwed up big time by changing the kind of cat litter and for not giving fresh chicken and steak on demand. Bill Cat yells meows , ( translation ) "I've got a lot of problems with you people."