theories. 1  1 : the analysis of a set of facts in their relation to one another. 2  2 : abstract thought : speculation. 3  3 : the general or abstract principles of a body of fact, a science, or an art music theory.
The Bernese Mountain dog originated in the Swiss mountains. Many 18th century paintings show dogs that look like a Bernese type dog. The breed was named for the Canton of Bern in Switzerland. They were working dogs particularly good at draft work, pulling carts to market.he Bernese Mountain dog originated in the Swiss mountains. Many 18th century paintings show dogs that look like a Bernese type dog. The breed was named for the Canton of Bern in Switzerland. They were working dogs particularly good at draft work, pulling carts to market.
The Presa Canario, or Canary Dog, was historically a guardian dog who excelled at driving cattle. The breed originated on the Canary Islands, which are a Spanish archipelago prone to volcanic activity located about 100 miles northwest of Africa.The Presa Canario was developed by crossing native dogs with Bulldogs and Mastiffs that were brought in from Britain during the 19th century.he breed originated on the Canary Islands, which are a Spanish archipelago prone to volcanic activity located about 100 miles northwest of Africa. The Presa Canario was developed by crossing native dogs with Bulldogs and Mastiffs that were brought in from Britain during the 19th century.