this reminds me of something my former cat halley did. i had just gotten home for the day, but i was going out for dinner with my mom. she arrived at my apartment soon after i got home, bringing a gift of a new silk lampshade, which i set on the table, and off we went. when we got home later that evening, halley was sitting patiently beside the lampshade. he waited until we got our coats off and sat down, then let out a very stern meow, reached out his paw, and shredded a huge gash in the side of the lampshade. this from a cat who never clawed anything. i guess he was mad enough at being left home alone to tell us about it!