page_title: Jack Russell Terrier
section_title: Differences with related breeds
hierarchical_section_title: Jack Russell Terrier / Description / Differences with related breeds
caption_attribution_description: English: This dog is a rough coated, white-brown Parson Russell Terrier. (: Deutsch: Dieser Hund ist ein rauhaariger, weiss-brauner Parson Russell Terrier.
context_page_description: The Jack Russell Terrier is a small terrier that has its origins in fox hunting in England. It is principally white-bodied and smooth, rough or broken-coated and can be any colour.
  The Jack Russell is frequently confused with the Parson Russell terrier and the Russell terrier, which is a shorter-legged, stockier variety. The term "Jack Russell" is also commonly misapplied to other small tan and white terriers. The Jack Russell is a broad type, with a size range of 25–38 cm. The Parson Russell is limited only to a middle range with a standard size of 30–36 cm, while the Russell terrier is smaller at 20–30 cm. Each breed has different physical proportions according to the standards of their national breed clubs.
  Jack Russells are an energetic breed that rely on a high level of exercise and stimulation. They are relatively free from any serious health complaints. Originating from dogs bred and used by the Reverend John Russell in the early 19th century, from whom the breed takes its name, the Jack Russell has similar origins to the modern Fox terrier. It has gone through several changes over the years, corresponding to different use and breed standards set by kennel clubs.
context_section_description: The Jack Russell terrier and Parson Russell Terrier breeds are similar, sharing a common origin, but have several marked differences — the most notable being the range of acceptable heights. Other differences in the Parson can include a longer head and larger chest as well as overall a larger body size. The height of a Parson Russell at the withers according to the breed standard is 30–36 cm (12–14 in) which places it within the range of the Jack Russell Terrier Club of America's standard size for a Jack Russell of 25–38 cm (10–15 in). However, the Parson Russell is a conformation show standard whereas the Jack Russell standard is a more general working standard.
  The Russell terrier, which is also sometimes called the English Jack Russell terrier or the Short Jack Russell terrier is a generally smaller related breed. Both the breed standards of the American Russell Terrier Club and the English Jack Russell Terrier Club Alliance states that at the withers it should be an ideal height of 20–30 cm (8–12 in). Although sometimes called the English or Irish Jack Russell terrier, this is not the recognised height of Jack Russells in the United Kingdom. According to the Jack Russell Club of Great Britain's breed standard, it is the same size as the standard for Jack Russells in the United States, 25–38 cm (10–15 in). Compared to the Parson, the Russell terrier should always be longer than tall at the withers, whereas the Parson's points should be of equal distance. The Fédération Cynologique Internationale standard for the Jack Russell terrier has this smaller size listed as a requirement. Terrierman Eddie Chapman, who has hunted in Devon for more than 30 years, the same area that John Russell himself hunted, notes that, "I can state categorically that if given the choice, ninety-nine percent of hunt terrier men would buy an under 12 in (30 cm) worker, if it was available, over a 14 in (36 cm) one."
caption: The Parson Russell terrier (pictured) shares a common ancestry with the Jack Russell terrier.
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