Males grow to between 110–120 pounds (50–54 kg) and 27–32 inches (69–81 cm), while females reach between 80–90 pounds (36–41 kg) and 25–29 inches (63–74 cm). They live to between 10–12 years of age.
Temperament:
The Great Pyrenees is a capable and imposing guardian, devoted to its family and somewhat wary of strangers — human or canine. When not provoked, it is calm, well-mannered and somewhat serious. It is very gentle with its family and children. It has an independent, somewhat stubborn, nature and may try to dominate a less secure owner. Some are not good off leash and may wander away. The Great Pyrenees tends to bark a lot.