What specific number of fully developed, functional toes characterizes the paws of the Norwegian Lundehund?

Six fully developed, functional toes on each foot

The Norwegian Lundehund possesses a singular and defining anatomical feature where it maintains six fully developed, functional toes on every single foot. This trait is scientifically recognized as polydactyly. This arrangement contrasts sharply with typical canine anatomy, where a standard dog usually possesses four toes plus a dewclaw on the front feet, and four on the hind feet. The Lundehund essentially adds another fully functional digit to both sets of limbs, which is explicitly required by the breed standard because it is integral to the dog's historical utility and movement.