Loki's not allowed to eat our human food, unless we specifically offer it to him. He knows the rule and he's actually pretty good about obeying it.
I left a couple bites of pizza on the coffee table this afternoon. He was perfectly well-behaved in respecting the rule. He was sleeping on the couch & showed no interest in my pizza. Even when I went into different rooms and sat by my laptop for awhile, he obeyed the rule perfectly fine.
Then I went outside the apartment to put in one load of laundry. I was only away for a couple minutes. When I returned, the pizza was GONE. Plate licked clean!
Gee, I thought he was sleeping... he's tricky...