Between St. John's water dog and the Polish Hunting Dog which was known to be a landrace bred for a specific purpose?
St. John's water dog The St. John's water dog, also known as the St. John’s dog or the lesser Newfoundland, was a landrace (a dog bred for a purpose, not pedigree or appearance) of domestic dog from Newfoundland. Little is known of the types that went into its genetic makeup, although it was probably a random-bred mix of old English, Irish and Portuguese working dogs. The number of St. John's water dogs started declining by the start of the 20th century. By the early 1980s, the variety was extinct.
Bolonka Russian Tsvetnaya Bolonka (Russian: Болонка ), also known as the Bolonka Zwetna in Germany, is a rare toy breed of the Bichon type, developed in Moscow and Saint Petersburg, Russia from the ancestors of smaller dogs such as the Bichon, Toy Poodle, Shih Tzu, Pekingese and French Bolognese. They include the white version Franzuskaya Bolonka, which is a variation of the Italian Bolognese dog. "Franzuskaya" means French, "Zwetna" is the German term for "Tsvetnaya" and means multicolored, and "Bolonka" translates as "Bolognese" in a number of Slavic languages. The Bolonka has recently gained more fame by being the chosen breed of Prince William and Kate Middleton.