The Grand Bleu de Gascogne is a breed of dog of the scenthound type, originating in France and used for hunting in packs. Today's breed is the descendant of a very old type of large hunting dog, and is an important breed in the ancestry of many other hounds. They are known for their melodious voice and cold nose.
The Grand Bleu de Gascogne's ancestors were contemporary with the St. Hubert Hounds, and were hunted in packs by the 14th century Comte de Foix on wolves, bears and boars. This type and breed are found in the ancestry all of the breeds of scenthound with "du midi" in their name.
Although these are large dogs, "Grand" does not necessarily refer to the size of the dogs. "In most cases it is simply a label for a pack that is used for larger game". Today. the breed is used in hunting boar, deer, and other game. The Grand Bleu de Gascogne is a very large dog weighing 80-120 lbs