Which breed of dog is this?

The St. Bernard or St Bernard is a breed of very large working dog from the western Alps in Italy and Switzerland. They were originally bred for rescue by the hospice of the Great St Bernard Pass on the Italian-Swiss border.

The hospice, built by and named after Italian monk Bernard of Menthon, acquired its first dogs between 1660 and 1670. The breed has become famous through tales of alpine rescues, as well as for its enormous size.

The St. Bernard is a giant dog. The weight of the breed is between 65 and 120 kg (140 and 260 lb) or more, and the approximate height at the withers is 70 to 90 cm (28 to 35 in).

The coat can be either smooth or rough; the smooth coat being close and flat while the rough is dense, flat, and more profuse around the neck and legs. The colour is typically a red shade with white, or a mahogany brindle with white. Black shading is usually found on the face and ears.

The tail is long and heavy, hanging low. Eyes are usually brown, but sometimes can be icy blue, and should have naturally tight lids, with haws only slightly visible.

The ancestors of the St. Bernard share a history with the Sennenhunds. The St. Bernard, also called Alpine Mountain Dogs or Alpine Cattle Dogs, are the large farm dogs of the farmers and dairymen of most notably the French Alps, livestock guardians, herding dogs, and draft dogs as well as hunting dogs, search and rescue dogs, and watchdogs.