Russell Terrier

Terrier

Small

12–14 y

AKC Terrier group · Derived from the adult weight midpoint (5.4 kg)

Uncited — a general reference figure, not a published one · no measured cohort for this breed

The Russell Terrier is a predominantly white working terrier with an instinct to hunt prey underground. The breed was derived from Jack Russell's working terrier strains that were used in the 19th century for fox hunting. Russell's fox working strains were much smaller than the Show Fox Terrier and remained working terriers.

Alert

Lively

Intelligent

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

Adult weight

Reference

Male

4.1–6.8 kg

Female

4.1–6.8 kg

Breed club figure (the American Kennel Club)

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 (under 6.5 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 4.1–6.8 kg and females 4.1–6.8 kg. Most are close to their full size by around 19 months, though the last little bit of filling out takes longer. Growth reference: Salt et al. 2017, WALTHAM (under 6.5 kg band).

No Russell Terrier 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.

12–14 y — the usual range. Uncited — a general reference figure, not a published one · no measured cohort for this breed. How the later years go comes down to weight, teeth, exercise and regular check-ups far more than to the breed.