Jack Russell Terrier
photo by: Jeffrey-C.-Dege
FCI-Standard N° 345 / 09.08.2004
ORIGIN : England.
COUNTRY OF DEVELOPMENT : Australia.
DATE OF PUBLICATION OF THE ORIGINAL VALID STANDARD
UTILIZATION : A good working Terrier with ability
to go to ground. An excellent companion dog.
CLASSIFICATION F.C.I. : Group
Section 2 Small Terriers.
With working trial.
BRIEF HISTORICAL SUMMARY : The Jack Russell Terrier
originated in England in the 1800’s due to
the efforts of the Reverend John Russell. He developed
a strain of Fox Terriers to suit his needs for a
dog to run with his foxhounds and go to ground to
bolt the fox and other quarry from their dens. Two
varieties evolved with basically similar Standards
except for differences, mainly in height and proportions.
The taller, more squarely built dog is now known
as the Parson Russell Terrier and the shorter, slightly
longer proportioned dog, is known as the Jack Russell
GENERAL APPEARANCE : A strong,
active, lithe working Terrier of great character
with flexible body of medium length. His smart movement
matches his keen expression. Tail docking is optional
and the coat may be smooth, rough or broken.
IMPORTANT PROPORTIONS :
• The overall dog is longer than high.
• 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 to 43 cm.
BEHAVIOUR / TEMPERAMENT : A
lively, alert and active Terrier with a keen, intelligent
expression. Bold and fearless, friendly but quietly
CRANIAL REGION :
Skull : The skull should be flat and of moderate
width gradually decreasing in width to the eyes
and tapering to a wide muzzle.
Stop : Well defined but not over pronounced.
FACIAL REGION :
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 a scissor bite.
Eyes : Small dark and with keen expression. MUST
not be prominent and eyelids should fit closely.
The eyelid rims should be pigmented black. Almond
Ears : Button or dropped of good texture and great
Cheeks : The cheek muscles should be well developed.
NECK : Strong and clean allowing
head to be carried with poise.
General : Rectangular.
Back : Level. The length from the withers to the
root of tail slightly greater than the height from
the withers to the ground.
Loin : The loins should be short, strong and deeply
Chest : Chest deep rather than wide, with good clearance
from the ground, enabling the brisket to be located
at the height mid-way between the ground and the
withers. 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 - about 40
cm to 43 cm.
Sternum : Point of sternum clearly in front of the
point of shoulder.
TAIL : May droop at rest. When moving should be
erect and if docked the tip should be on the same
level as ears.
Shoulders : Well sloped back and not heavily loaded
Upper arm : Of sufficient length and angulation
to ensure elbows are set under the body.
Forelegs : Straight in bone from the elbows to the
toes whether viewed
from the front or the side.
HINDQUARTERS : Strong and muscular, balanced in
proportion to the shoulder.
Stifles : Well angulated.
Hock joints : Low set.
Rear pastern(Metatarsus) : Parallel when viewed
from behind while in free standing position.
FEET : Round, hard, padded,
not large, toes moderately arched, turned neither
in nor out.
GAIT / MOVEMENT : True, free
HAIR : May be smooth, broken
or rough. Must be weatherproof. Coats should not
be altered (stripped out) to appear smooth or broken.
COLOUR : White MUST predominate
with black and/or tan markings. The tan markings
can be from the lightest tan to the richest tan
SIZE AND WEIGHT :
Ideal Height : 25 cm (10 ins) to 30 cm (12 ins).
Weight : Being the equivalent of 1 kg to each 5
cm in height, i.e. a 25 cm high dog should weigh
approximately 5 kg and a 30 cm high dog should weigh
FAULTS : Any departure from
the foregoing points should be considered a fault
and the seriousness with which the fault should
be regarded should be in exact proportion to its
degree. and its effect upon the health and welfare
of the dog. However, the following weaknesses should
be particularly penalised:
• Lack of true Terrier characteristics.
• Lack of balance, i.e. over exaggeration
of any points.
• Sluggish or unsound movement.
• Faulty mouth.
Any dog clearly showing physical
or behavioural abnormalities shall be disqualified.
N.B. : Male animals should
have two apparently normal testicles fully descended
into the scrotum.