My dog knows my complete mood complex instantly every time I show up. It's a social/emotional intelligence unmatched by human. Unfortunatelly, or hopefuly for the human race, he cannot combine this ability with enough cognitive intelligence.

Obvious but good to get confirmation. Anyone who's owned a dog knows that they can tell your mood in myriad ways, but this is the kind of basic research that is necessary to clear the way for more serious insights.