Here are some of the characteristics of the Norwegian Lundehund breed as determined by the Norwegian Lundehund Association of America's published breed standard.
Size: male 14 - 15 1/2 inches, females 12 3/4 inches - 14 inches
Coat: undercoat: dense, rough, soft; short on head and front of legs; abundant at neck, thighs, and on the tail.
Color: combined with white: red to fawn; black, grey, and white with dark patches
Eyes: sloping, yellowish-brown
Ears: triangular, mid-size, broad-based
Muzzle: wedge-shaped, mid-length, nasal bridge is slightly convex
Tail: set high, mid-length, well covered with hair
The Norwegian Lundehund dog breed is one of the most "primitive" breeds. Therefore it is as stubborn as it can get and obstinate with a mind of its own. Norwegian Lundehunds will require consistent training. Socialization will also be important to get them acquainted with other animals and people. Once properly housebroken they make fine, energetic, and playful companions and are very tolerant with boisterous children, only as long as the children are recognized as part of the family.
Remember that breed only provides a general clue as to any individual dog's actual behavior. Make sure to get to know dogs well before bringing them into your home.
Health:
The lifespan of a Norwegian Lundehund is considered unpredictable because of the Lundehund Syndrome – the collective term for a group of gastrointestinal disorders that include bacterial overgrowth in the small intestine and protein-losing enteropathy which result in the intestine’s abnormal protein loss.