ORIGIN: Great Britain


PRINCIPAL FUNCTION: An excellent companion

Classification FCI: Group 3 – Terriers

Section 2 – Small Terriers.

With working trial.


Jack Russell Terrier was originated thanks to the efforts of Reverend John Russell in England in 1800. He developed a style of Fox Terrier to suit his needs, a dog to run with his foxhounds that could also jump into the ground for fox and other prey. Two varieties evolved with basically similar standards except in height and proportions, one taller, more squarely, known as the Parson Russell Terrier and the other, lowest, slightly longer, known as Jack Russell Terrier.


A strong active work terrier, of great character, with flexible body, medium length. His smart movement matches his keen expression. Tail docking is optional and his coat may be short, rough or broken.


Lively, alert and active with a keen, intelligent expression. Bold and fearless, friendly but quietly confident.



Shoulders: Well sloped back and not heavily muscled loaded.

Front legs: Straight in bone from the elbows to the toes whether viewed from the front or side.

Upper arm: Of sufficient length and enough bent to ensure elbows are set under the body.

HINDQUARTERS : Strong and muscled, balanced in proportion to the shoulder.

Stifle: Well bent.

Hocks: Parallel when viewed from behind while standing freely.

Hock: Near the ground.

FEET: Round , hard, padded, not large, toes moderately arched, turned neither in nor out .

MOVEMENT: Effective, free and springy.

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  • The overall dog is longer than higher.
  • The depth of the body from the withers to the brisket should equal the length of foreleg from elbows to the ground.
  • The girth behind the elbows should be about 40-43 cm.


HAIR: May be smooth, broken or rough. It must be waterproof. The garments should not be altered (torn) to appear as short or brittle.

COLOUR: White MUST predominate with black markings and/or fire (tan). The markings can be from the lightest fire to the richest one (chestnut).


Ideal height: 25 cm. (10 inches) to 30 cm. (12 inches).

Weight: The equivalent of 1 kg of weight per 5 cm of high.

For example: A dog of 25 cm should weigh approximately 5kg, and a dog of 30 cm should weigh 6 kg.


Nose: Black .
Muzzle: The length from the stop to the nose should be slightly shorter than from the stop to the occiput .
Lips: Tight-fitting and pigmented black .
Jaws / Teeth: Very strong, deep , wide and powerful . Strong teeth closing to scissor .
Eyes: dark with keen expression . MUST not be prominent and should be well fitting eyelids .The eye rims should be pigmented black . Nutty.
Ears: Ears halfallen or dropped plugging the ear canal , good texture and great mobility.
Cheeks: The cheek muscles should be well developed


Skull: The skull should be flat and of moderate width gradually decreasing in width to the eyes and tapering to a wide muzzle.

Fronto -nasal depression ( Stop) : Well defined but not pronounced.


Overall: Rectangular.

Topline: Level. The length from the withers to the root of tail slightly greater than the height at the withers.

Loin: The loins should be short, strong and very muscular.

Chest: Chest deep rather than wide, with good clearance from the ground, allowing the chest to be in the middle of the withers to the ground. The ribs should be well sprung from the spine, flattening on the sides so that the girth behind the elbows can be spanned by two hands – approx. 40 to 43 cm.

Sternum: Point of sternum clearly in front of the point of the shoulder.

Tail: May droop at rest. When moving it should be erect and if docked the tip, should be at the same level as ears.