Thus far, Finn has learned that he's much more likely to get a treat if he's sitting. He doesn't quite connect the action to the command yet, but still, that's progress. Moonpie has learned that if I'm saying "Sit!", treats are in the offering for good doggies, and she wants in on that action. Any actual sitting on her part is purely accidental. I've learned that I really need to get somebody to isolate the second dog while I work with the first dog, otherwise it's a disaster in the making.