Leonberger University of Bern, Bern, Switzerland In the 1830s, Heinrich Essig, a dog breeder and seller and mayor of the town of Leonberg near Stuttgart in Baden-Württemberg, Germany, claimed to have created the Leonberger by crossing a female Landseer Newfoundland with a "barry" male from the Great St. Bernard Hospice and Monastery (which would later create the Saint Bernard breed). Later, according to Essig, a Pyrenean Mountain Dog was added, resulting in very large dogs with the long, white coats that were the fashion for the time, and pleasant temperament. The first dogs registered as Leonbergers were born in 1846 and
Pyrenean Mastiff Pyrenean Mastiff The Pyrenean Mastiff (Spanish:"Mastín del Pirineo", Aragonese:"Mostín d'o Pireneu") is a large breed of dog originally from the Aragonese Pyrenees in Spain. It should not be confused with the Pyrenean Mountain Dog. The Pyrenean Mastiff is a very large dog, males and females at the withers, although they can be up to . They have a heavy white coat with large darker spots. The average weight is about , although males can often weigh over . For a long time the Pyrenean Mastiff accompanied the herds of sheep in its migratory paths from the Aragonese and Navarrese Pyrenees