Well, if you and your pup are going to indulge in a little ice cream together, why not go all the way and actually share a meal?
I'm not sure if it's available here in the US, but Judge's Choice of Japan (website translated from Japanese via google) offers a new type of dog food that you can enjoy, too. For the dog's health, the foods contain no onions or peppers, and for both of you, there is only a minimal amount of fat and sodium. The meals are sold primarily in department stores, and can cost up to 3,000 yen (about $25). But hey, that's still cheaper than a sushi dinner for two!