Newfoundland

Pinschers & molossoids

Giant

Median 11 y

FCI group 2 · Pinscher and Schnauzer, Molossoid and Swiss Mountain Dogs · Derived from the adult weight midpoint (56.7 kg)

Median survival across 2,162 UK dogs (VetCompass, McMillan 2024) · half live 8–13 y

The Newfoundland is a large breed of working dog. They can be black, grey, brown, or black and white. However, in the Dominion of Newfoundland, before it became part of Canada, only black and Landseer (white-and-black) coloured dogs were considered to be proper members of the breed.

Sweet

Patient

Devoted

Summary from Wikipedia (CC BY-SA) · reference ranges from the Kintail breed dataset

Adult weight

Reference

Male

59–68 kg

Female

45.4–54.4 kg

Breed club figure (the Newfoundland Club of America)

Weight for age

Stock data

Male

Female

Expected range

Expected range from the breed's own adult weight, kilograms. Growth reference: Hawthorne et al. 2004, WALTHAM, n=15 Newfoundlands.

Heat cycles · females

Stock data

First heat

8–12 mo

typical

Interval

180 d

typical

Bleeding

~9 d

typical

Proestrus 9d

Estrus 9d

Diestrus 52d

Anestrus 110d

General figures for dogs, not for this breed — individual cycles vary widely.

Questions people ask

Adult males usually weigh 59–68 kg and females 45.4–54.4 kg. Most are close to their full size by around 11 months, though the last little bit of filling out takes longer. Growth reference: Hawthorne et al. 2004, WALTHAM, n=15 Newfoundlands.

No Newfoundland cycle figures are published here yet, so this is general guidance rather than a breed number: most females have a first season somewhere between six and fifteen months, and cycles then settle to roughly every 180 days. Smaller breeds tend to start earlier and larger ones later.

The median is 11 y. Median survival across 2,162 UK dogs (VetCompass, McMillan 2024) · half live 8–13 y. How the later years go comes down to weight, teeth, exercise and regular check-ups far more than to the breed.