Cat at me leaving: "GOOD, you're boring me anyway. No need to come back any time soon unless you're bringing back some kind of snack for me. Oh, and I'm gonna take this chair you were sitting in and just stare at you with dead eyes if you try to reclaim it."
Dog at me leaving: [Sitting upright w wide eyes] "When will you be back? Did I offend you? Should I follow you right now? OK, yeah, I'll take that as a yes, I probably should follow you. OH, OK, you're going to the bathroom, I'll just sit right outside the door and wait faithfully."
Grew up in an equal opportunity dog and cat family, love both species, but it's hilarious to observe the differences at close range.