Mary Allen
#4 The second version is that the divers descended from the Tibetan Mastiffs.
There is no evidence of this, but mastiffs are the oldest breed of dogs, moreover, one of the largest.
#5 The third version is that the Newfoundlands formed on their own, like a breed.
Dogs lived close to seas and lakes, so their fur evolved to become water-repellent. Sizes were achieved by crossing with other large dog breeds such as Molossians, Mastiffs, and Sheepdogs.
