Are Great Pyrenees diggers?

No, Great Pyrenees are not excessive diggers compared to some other breeds, but digging is a natural behavior for dogs, so some Great Pyrenees might dig to create a comfortable resting spot, to cool off in hot weather, to alleviate boredom, or to escape from an enclosed area. 

To prevent unwanted digging behavior, provide your Great Pyrenees with plenty of mental and physical stimulation, including regular exercise, interactive play sessions, chew toys, puzzle toys, and other enrichment activities.