Between St. John's water dog and the Polish Hunting Dog which was known to be a landrace bred for a specific purpose?
Polish Hunting Dog The Polish Hunting Dog, or formerly Polish Scenthound (Polish: "Gończy Polski" ) is a breed of scent hound originating in Poland.
Borzoi The Borzoi ( , literally "fast"), also called the Russian wolfhound (Russian: Ру́сская псовая борзая ), is a breed of domestic dog ("Canis lupus familiaris"). Descended from dogs brought to Russia from central Asian countries, it is similar in shape to a greyhound, and is also a member of the sighthound family.