Here is a typical Great Pyrnees.
The Great Pyrenees is a capable and imposing guardian, devoted to its family, and somewhat wary of strangers—human and canine. It is often used to guard livestock. When not provoked, it is calm, well-mannered and somewhat serious. Courageous, very loyal and obedient. Gentle and affectionate with those he loves. Devoted to family even if self-sacrifice is required. It is very gentle with its family and children.
http://www.dogbreedinfo.com/greatpyrenees.htm
and an Anatolian Shepard
The Anatolian Shepherd is a flock guardian with a superior sense of sight and hearing. It is not a herding dog. It is very loyal, alert and capable of great speed and endurance. It is intelligent, alert and easy to train, but is not a dog for beginners.
http://www.dogbreedinfo.com/anatolianshepherd.htm