Okay, must be honest and thought this was a thread about dressing your pets, something I am not a fan of....
But dressing your dog; there are only 3 words "everything on it". There is an art to it. Start with a light amount of condiments ketchup and mustard. Then the toppings; relish, diced onions, sauerkraut (or jalapenos, never jalapenos and sauerkraut). If they serve horseradish, great with kraut-dog. Top with ketchup and mustard.
BTW best dog I ever had was at the very short-lived MRBL Ellensburg Bulls games. Seriously the team lasted only two weeks, but my love for Careks links is forever. Roslyn's Careks Meats has been around for 125 years and there's good reason. If you pass through central Washington make sure to find this small slice of paradise.