Working is what the Great Pyrenees were bred to do. They were put out in the valleys of the Pyrenees mountains to protect the sheep in the spring and summer. In the fall and winter the dogs were brought back to the village and were considered "doormat" dogs because all they did was lay around all day long, seemingly useless. However, the shepard's knew this not to be true in that they didn't loose many livestock when the pyrs were "on guard".
In our life our pyrenees guard our goats, sheep and home. We currently have two full time working dogs and several more that could do the job if called upon to do so. We are very active with GPRNC and use our livestock and existing dogs to "test" and train rescue dogs that show the potential for livestock work.
Just because it is born in a barn doesn't mean it is suitable for livestock work. You can't just "add water" and get a good working dog. You have to be willing to put in the time and training so that the dog knows what it is supposed to be protecting and from what. Getting a puppy who comes from working stock is a good way to start, along with getting the correct type of help and advise from the breeder. We can offer help and assistance in training a working dog to work.
We have found that no matter the job a pyrenees needs to work. His job might be working in the field, hanging out at the family farm, or guarding the front door to his home...but he has a job non-the-less.