Cute jack russell terrier sitting on grass :-
The Jack Russell terrier is a small terrier that has its origins in fox
hunting; it is principally white-bodied and smooth, rough or broken-coated. It
is commonly confused with the Parson Russell terrier and the Russell terrier, which is a shorter-legged, stockier variety.
(Within the Fédération Cynologique Internationale the "Russell
terrier" is also known as "Jack Russell terrier.") The term
"Jack Russell" is commonly misapplied to other small white terriers.
The Jack Russell is a broad type, with a size range of 10–15 inches
(25–38 cm). The Parson Russell is limited only to a middle range with a
standard size of 12–14 inches (30–36 cm), while the Russell terrier is smaller
at 8–12 inches (20–30 cm). Each breed has different physical proportions
according to the standards of their breed clubs.
The Jack Russell is an energetic breed that relies on a high level of
exercise and stimulation and is relatively free from serious health complaints.
Originating from dogs bred and used by Reverend John Russell in the early 19th
century, it 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. Recognition by kennel clubs for the Jack Russell
breed has been opposed by the breed's parent societies – which resulted in the
breeding and recognition of the Parson Russell terrier. Jack Russells have
appeared many times in film, television and print with several historical dogs
of note
Jack Russells are first and foremost a working terrier. Originally bred
to bolt fox from their dens during hunts, they are used on numerous ground-dwelling
quarry such as groundhog, badger, and red and grey fox. The working JRT is
required to locate quarry in the earth, and then either bolt it or hold it in place
until they are dug to. To accomplish this, the dog won't bark but will expect
attention to the quarry continuously. Because the preservation of this working
ability is of highest importance to most registered JRTCA/JRTCGB breeders, Jack
Russells tend to be extremely intelligent, athletic, fearless, and vocal dogs.
It is not uncommon for these dogs to become moody or destructive if not
properly stimulated and exercised, as they have a tendency to bore easily and
will often create their own fun when left alone to entertain themselves.
Their high energy and drive make these dogs ideally suited to a number
of different dog sports such as flyball or agility. Obedience classes are also
recommended to potential owners, as Jack Russells can be stubborn at times and
aggressive towards other animals and humans if not properly socialized.[8]
Despite their small size, these dogs are not recommended for the condominium or
apartment dweller unless the owner is ready to take on the daunting task of
providing the dog with the necessary amount of exercise and stimulation. They
have a tremendous amount of energy for their size, a fact which can sometimes
lead to trouble involving larger animals. They may seem never to tire and will
still be energetic after their owner has called it a day. While socialised
members of the breed are friendly towards children, they will not tolerate
abuse even if it is unintentional.
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