TARRYTOWN, N.Y.—Wasabi could be the flavor of the year at the Westminster Kennel Club dog show. Or it might have a taste for Bourbon. Dogdom heavyweights Bourbon the whippet, Wasabi the Pekingese and Striker the Samoyed are among finalists for Sunday’s best in show title, and they have plenty of competition: a French bulldog named Mathew, an old English sheepdog called Connor, a German shorthaired pointer named Jade, and a West Highland white terrier known as Boy. “It’s always exciting every time, and you’re always hopeful,” said Wasabi’s handler and breeder, David Fitzpatrick, who guided the Peke’s grandfather Malachy to the Westminster title in 2012. “It’s an honor to be at Westminster.” Both Wasabi and Bourbon have won another big show, the American Kennel Club National Championship, and Bourbon was Westminster’s runner-up last year. Striker went into Westminster as the top-ranked dog in the U.S. Meanwhile, Bourbon jockeys for bragging rights …