We had a game we played with our German shorthaired pointer. Her dish sat there with dry food in it, but if you picked up a handful and, one at a time, scooted them across the floor for the cats to chase the dog would always rush in and gobble them up. Even if the cats caught them, they only kicked them until the dog caught the food. Everyone was happy.

For a while I used to put some powdered brewer's yeast over the top of her food. It has lots of B vitamins, and those are apparently good in humans (for discouraging mosquitoes) and in dogs (for discouraging fleas). And though I never liked the taste of Brewer's yeast (even orange juice barely masks the taste) the dog loved the stuff. A teaspoon of the powder is probably plenty, as I recall.

SRS