My cat has started doing something lately that she's never really done before......eating off our plates. Not the actual food but she's "cleaning" it off. She's never done this before except for ice cream and/or cereal. She's getting pretty bossy about it too. husband was in our room watching football and had fixed a sandwich. She started after the paper plate and he moved it because part of the sandwich was still on there but let her have it after he ate. She licked off every crumb she could find. It just seems odd because like I said, she's never been one for "people" food unless it was a very few select things. She's been doing this for a couple of weeks. I feed her the Purina cat food made for older cats (She's 14) but I wonder if she's somehow lacking in a nutrient or something. Any thoughts?