And now, Cuban dogs. They are called Havanese because they lived for a couple of centuries in Havana. Less than a foot tall, they are bundles of silky fluff willing to go to the ends of the earth with you as long as you don't ignore them. Laurie Nuell, in Miami, says, ''The lore of the Cuban dog intrigued us. We thought he deserved a Spanish name.'' The Nuell dog is called Juan José, or J.J. ``He's one of the sweetest things ever.''''Truthfully, during the Elián fiasco, we just got a surge of [Cuban] patriotism,'' says Pilar Alvarez-Mena. ``When I...