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American Bull-Jack Hybrid Description

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Hybrid Description

The American Bull-Jack is not a purebred dog. It is a cross between the American Bulldog and the Jack Russell Terrier. The best way to determine the temperment of a mixed breed is to look up all breeds in the cross. It is possible you can get any combination of any of the characteristics found in either breed. Not all of these designer hybrid dogs being bred are 50% purebred to 50% purebred. It is very common for breeders to breed multi-generational crosses. Please review individual breeds for potential health issues.

American Bulldog Breed Description - Cross #1

The American Bulldog is a stocky, well-built, strong-looking dog, with a large head and a muscular build. The shoulders and chest tend to be the most muscular parts of the American Bulldog. Its coat is short and generally smooth, requiring little maintenance except a bath every few weeks. The breed is a light to moderate shedder. Colors, while historically predominantly white with patches of red, black, or brindle, have grown in recent years to include many color patterns including black, red, brown, fawn, and all shades of brindle. The color conformation is quite varied. Black pigmentation on the nose and eye rims is traditionally preferred, with only some pink allowed. Eye color is usually brown, but heterochromia also occurs. American Bulldogs are known to drool more than other breeds of dog. The Bully type is generally a larger, heavier dog with a shorter muzzle, but the muzzle should never be so short that it causes difficulty with breathing. Standard types are generally more athletic with longer muzzles and a more square head. Many modern American Bulldogs are a combination of the two types, usually termed "hybrid." In general, American Bulldogs weigh between 27 and 54 kg (60 to 120 lb) and are 52 to 70 cm (20 to 28 in) at the withers, but have been known to greatly exceed these dimensions, especially in the "out of standard," nonworking stock.

Behavior

The American Bulldog is loyal, reliable, brave and determined. Not a hostile dog. Alert and self-confident, this breed genuinely loves children. It is known for its acts of heroism toward its master. It has strong protective instincts, and needs a firm, confident, consistent pack leader. Well-socialize and obedience train them at an early age, to prevent them from becoming reserved with strangers. Without that strong-minded pack leader who can tell the dog what is expected of it, it may be aggressive with other dogs. They need to be around people and know their place in their pack to be truly happy. This breed tends to drool and slobber. Without enough daily mental and physical exercise they will become high strung and may become hard to handle.

The American Bulldog will do okay in an apartment if it is sufficiently exercised. They are relatively inactive indoors and will do best with at least an average-sized yard.

Health

Some health problems in American Bulldogs are often found within certain genetic lines, and are not common to the entire breed, while others, such as neuronal ceroid lipofuscinosis (NCL), Ichthyosis, disorders of the kidney and thyroid, ACL tears, hip dysplasia, cherry eye, elbow dysplasia, entropion, ectropion, and bone cancer are more common to the general population of American Bulldogs. There are DNA tests available to help breeders screen breeding animals for NCL (neuronal ceroid lipofuscinosis) and Ichthyosis. It is highly recommended to spend time to research your breeder information, including your American Bulldog's family history. A Penn Hip (Pennsylvania Hip Improvement project) or OFA (Orthopedic Foundation for Animals) screening is recommended for all potential breeding animals. Some breeds of American Bulldog are prone to allergies. Symptoms like a runny nose or a rash are examples of signs of allergies. Some vets recommend dog owners to give 25mg of Benadryl per day; in most cases it helps.



Jack Russell Terrier Breed Description - Cross #2

The JRTCA was founded in 1976 by Mrs. Ailsa Crawford, one of the first Jack Russell Terrier breeders in the United States. Ms. Crawford and the early founders of the Jack Russell Terrier Club put a lot of thought into structuring the JRTCA so that work remained front and center.

Towards that end, the club decided that its highest award — the “Bronze Medallion” — would not go to show dogs, but to working dogs that had demonstrated their ability in the field by working at least three of six types of American quarry — red fox, Gray fox, raccoon, groundhog, opossum, or badger in front of a JRTCA-certified field judge. In the show ring the Jack Russell Terrier Club of America decided to ban professional handlers as it was thought this would make the shows less serious (and more fun) while keeping the focus on the essential element of work.

Instead of mandating the kind of narrow conformation ranges demanded by the American Kennel Club for their terrier breeds, the JRTCA decided to divide the diverse world of the Jack Russell Terrier into three coat types (smooth, broken and rough), and two sizes (10 inches tall to 12.5 inches tall, and 12.5 inches tall to 15 inches tall).“Different horses for different courses” became the watchword, with overt recognition that different quarry, different earths, and different climates required different dogs.

Unlike the Kennel Club, the Jack Russell Terrier Club of America also decided to maintain an “open” registry so that new blood might be infused at times. At the same time, the JRTCA discouraged inbreeding and eventually restricted line breeding to a set percentage. To balance off an open-registry with the desire to keep Jack Russell-type dogs looking like Jack Russells, the JRTCA decided not to allow dogs to be registered at birth or to register entire litters. Instead, each adult dog would be photographed from both sides and the front, with each dog admitted to the registry on its own merit. In addition, each dog had to be measured for height and chest span. This last element turned out to be quite important, as it meant that the height and chest measurements of adult dogs were recorded as they were registered. Over time, both height and chest size of adult dogs could be tracked through pedigrees — an essential element of breeding correctly sized working terriers. The JRTCA was not shy about their rationale for these rules: they openly and emphatically opposed Kennel Club registration, maintaining that time had shown that dogs brought into the Kennel Club quickly grew too big and often lost other essential working attributes such as nose, voice, and prey drive.

The Jack Russell Terrier is bred to conform to a conformation show standard. Unlike its close relative, the Parson Russell Terrier, Jack Russell Terriers have noticeably longer legs that are about as tall as the length of the Terrier's body. It is a predominantly white breed with black, tan or tricolor markings and an easy to groom coat which is either smooth or broken (similar to a smooth coat, but with some longer hair on the head, face, legs or body). The breed standard does not recognise a Parson Russell with a curly or rough coat. There is a clear outline with only a hint of eyebrows and beard should the dog be broken coated. They possess moderately thick small "V" shaped drop ears with the tip pointed towards the eyes. The nose of the dog should be black. The normal range of sizes is between 13–14 inches (33–36 cm) tall at the withers, with a weight around 13–17 pounds (5.9–7.7 kg).

The Parson Russell has a relatively square outline, with a body about as long as the dog is tall. Compared to the Jack Russell Terrier the Parson Russell has a longer head and a larger chest along with overall a slightly larger body size. The Parson retains the flat skull but not the elongated shape of the Fox Terrier, and with lower set ears. In addition, the Jack Russell Terrier has a greater variation in size, ranging between 10–15 inches (25–38 cm) in height at the withers. Two hands should be able to span the chest of the dog behind its elbows, with the thumbs at the withers. This is required in show judging, with the judge lifting the dog's front legs gently off the ground in this motion in order to measure the size of the chest. The judges fingers should meet under the chest and the thumbs on top of the spine. The American Kennel Club describes this as a "significant factor and a critical part of the judging process." It is not done to measure the size of the chest, but rather to feel for the correct shape.

Under the show standard, there are several physical points which would be treated as faults in the show ring. These are for the height of the dog at the withers to be outside of the standard range, or for the dog to possess either pricked up ears, a liver or brown colored nose, an overshot or undershot jawline or to have brindle markings.

The AKC used to recognize the Jack Russell Terrier however as of April 1, 2003 they changed the name to Parson Russell Terrier. The breed split into two breeds and now the Jack Russell Terrier and Parson Russell Terrier are considered two different breeds. The Parson's name change is in great part to a lawsuit from the JRTCA to the AKC, when the breed was first allowed registration.

Behavior

The Terrier is a cheerful, merry, devoted and loving dog. It is spirited and obedient, yet absolutely fearless. Careful and amusing, he enjoys games and playing with toys. Stable dogs are friendly and generally kind to children. Children should be taught not to tease or hit the dog. They are intelligent, independent, somewhat stubborn, and they have a strong personality. He makes a devoted, affectionate pet and is easy to train.

He can adjust to life as a house dog provided he gets a lot of much needed exercise. The coat requires little care.

Health

The breed is sporadically prone to dislocation of the kneecaps, inherited eye diseases, deafness and Legg Perthes, a disease of the hip joints of small dog breeds. It is also prone to mast cell tumors.


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