Now here's the thing.
Tika has figured out that I'm walking around with a pocket of goodies and when I say "Jake!", SHE runs over to see what's going on.
Seems to me I remember something like that between Remington and Sheba, or maybe Sheba and Amber--that there was something in particular that the one dog would do and so we'd say their name there, and the smart dog always figured that out, so when we'd say the other dog's name, the smart dog would go dashing over to see what fun was afoot.
Jake's not as fast a learner, but food is somewhat more powerful than the opiates released by licking one's feet, so I have hope.