"We've got a real problem here doc, Frisky's eating less food and we're worried about her. She usually eats one 5.5 ounce can of cat food throughout the day. Now I can barely get two 3.5 ounce cans in her. I know it sounds weird, you'd think it was more food, but they really do pack more food in those larger cans. What should we do?"
(I'm really not making this up...)