At the beach we bought some freeze-dried meatball treats that the pugs are crazy about. I know what you're thinking - since they'll grab anything remotely edible and swallow it whole in about five hundred milliseconds, how can I tell the difference?
This is how: When Lilly's in the backyard and I stand at the back door and yell "Cookie," she will usually come inside. Sometimes, though, she's more interested in what she's doing, and a cookie's not enough incentive to stop.
But, if I then yell "Meatball!" she comes running.