Why does a Great Pyrenees have double dew claws?

Great Pyrenees have double dew claws as a breed characteristic that enhances their ability to navigate rugged terrain. These extra dew claws provide additional grip and stability while climbing and traversing steep or rocky areas, which is essential for their historical role as livestock guardians in mountainous regions. The double dew claws are also believed to serve as a form of protection against injury when maneuvering in challenging environments.