Great Pyrenees dogs come from Spain and France. These dogs were bred to guard flocks within sharp mountains. When they grow up, they get as big as 80-120 pounds and their average lifespan is 10-12 years. They are known to be rather obedient, as well as very loving. Great Pyrenees were bred in cold weather and their thick layer of white fur matches it. Due to all of their fur, they require a lot of brushing and grooming, especially in hot weather.