My boy is a clever little dickens, especially where food is concerned. I'm wondering if he may have had help this time, though - Ms. Kerrigan was the first of our fuzzy-butts to figure out how to get the lids off of things (containers of Pounce, as I recall), so either she helped get the lid off or Mr. Ari's since picked up her trick.
At least they don't like chocolate - which keeps my preferred goodies safe. :)