Japanese Spitz

Spitz & primitive

Small

Median 13 y

FCI group 5 · Spitz and primitive types · Derived from the adult weight midpoint (7.9 kg)

Median survival across 453 UK dogs (VetCompass, McMillan 2024) · half live 10–15 y

The Japanese Spitz is a Japanese small to medium breed of dog of the Spitz type. There are varying standards around the world as to the ideal size of the breed, but they are always larger than their smaller cousins, the Pomeranian.

Loyal

Alert

Playful

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

Adult weight

Reference

Male

4.5–11.3 kg

Female

4.5–11.3 kg

Estimated — the AKC (FSS) breed page's 10-25 lb, the only published weight for the breed

Weight for age

Stock data

Male

Female

Expected range

Expected range from the breed's own adult weight, kilograms. Growth reference: Salt et al. 2017, WALTHAM (6.5–9 kg band).

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 4.5–11.3 kg and females 4.5–11.3 kg. Most are close to their full size by around 17 months, though the last little bit of filling out takes longer. Growth reference: Salt et al. 2017, WALTHAM (6.5–9 kg band).

No Japanese Spitz 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 13 y. Median survival across 453 UK dogs (VetCompass, McMillan 2024) · half live 10–15 y. How the later years go comes down to weight, teeth, exercise and regular check-ups far more than to the breed.