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.
Silesian horse The Silesian horse, Polish: Koń śląski, Silesian: Ślůnski kůń, is a breed of warmblood horse from the area of historic Silesia, which lies mostly within modern Poland. It is the heaviest of the Polish warmblood breeds, and has been influenced mainly by the Thoroughbred and Oldenburg, and partly by the East Friesian and German halfbred. The Oldenburg influence was particularly pronounced after World War II, when imported stallions were used to keep the breed from becoming extinct. Two types are recognised in the breed standard, an old and a new. At 3 years old, stallions of the old type stand 160 – at the withers, mares about 2 cm less; the girth is 190 – , and the cannon-bone circumference about 23–24 cm. The new or racing type is taller and lighter, stallions standing 164 – at the withers and mares about 2 cm less; the girth measures 185–200 cm and the cannon-bone 21.5–23 cm. Stallions average 650 kg , mares 600 kg. The current stud-book dates from 1961; registers for this type of horse have been kept since the late 19th century. In 2008 the breed numbered about 5000.