Cav-A-Jack

The Cav-A-Jack is a cross between the Cavalier King Charles Spaniel and the Jack Russell Terrier. Because each hybrid inherits a unique combination of traits from both parents, we recommend thoroughly researching both breeds before choosing a Cav-A-Jack. Pay special attention to temperament, health issues, and care requirements, as your dog may express characteristics from either parent breed.

Cavalier King Charles Spaniel

Cavalier King Charles Spaniel

The Cavalier King Charles Spaniel is an elegant toy spaniel with a graceful, well-balanced appearance that has made it a beloved companion breed for centuries. Standing between 12 and 13 inches at the shoulder and weighing 13 to 18 pounds, the Cavalier presents a compact yet athletic silhouette. The body is slightly longer than tall with a level topline, moderate bone, and sufficient substance to suggest an active, sporting nature while maintaining refinement. The chest is moderately deep with well-sprung ribs, and the tail is carried happily but never much above the level of the back, often wagging continuously in a characteristic display of the breed's cheerful disposition. The breed's head is one of its most endearing features, with a gently rounded skull, a full muzzle, and large, round, dark brown eyes set well apart that convey a sweet, gentle expression characteristic of the breed. The nose is fully pigmented black with well-developed nostrils, and the face is cushioned beneath the eyes without appearing snipey or coarse. The ears are set high on the head and are long and well-feathered, hanging close to the face and framing it beautifully. The neck is of moderate length, slightly arched, and flows smoothly into well-laid-back shoulders. The overall expression is one of soft appeal combined with alert intelligence, creating the quintessential look of a devoted companion. The Cavalier's coat is one of its crowning glories, consisting of moderately long, silky fur that may have a slight wave but is never curly. Feathering adorns the ears, chest, legs, feet, and tail, adding to the breed's elegant appearance. Four color patterns are recognized: Blenheim, featuring rich chestnut markings on a pearly white background often with a distinctive chestnut spot on the forehead; Tricolor, consisting of jet black and white with tan markings over the eyes and on the cheeks; Black and Tan, showing jet black with rich tan markings; and Ruby, a solid rich reddish-brown throughout. The breed requires regular grooming to maintain coat condition and prevent matting, particularly in the feathered areas.

Key Characteristics

Temperament
Temperament Temperament Temperament Temperament Temperament Temperament Cavaliers are intelligent and eager to please, responding beautifully to positive reinforcement training methods. They are sensitive dogs that do not respond well to harsh corrections and thrive in harmonious household environments. One consideration for potential owners is the breed's tendency toward separation anxiety, as their strong attachment to their families can make them distressed when left alone for extended periods. They do best in homes where someone is present most of the day or where they have canine companionship to ease periods of solitude.
Health Considerations
Health Considerations Health Considerations Health Considerations Health Considerations Health Considerations Health Considerations Other health concerns in the breed include hip dysplasia, patellar luxation, and various eye conditions such as cataracts, progressive retinal atrophy, and dry eye syndrome. Ear infections are common due to the breed's long, pendulous ears that restrict airflow to the ear canal. Dental disease develops readily in many Cavaliers, necessitating regular dental care and professional cleanings. The breed typically lives 10 to 12 years, though heart disease may significantly impact lifespan for affected individuals. Prospective owners should seek puppies only from breeders who conduct comprehensive health testing and prioritize cardiac and neurological health in their breeding programs.
Learn More About The Cavalier King Charles Spaniel

Jack Russell Terrier

Jack Russell Terrier

The Jack Russell Terrier is a small, athletic working terrier developed for fox hunting, presenting a compact, balanced appearance that reflects both agility and endurance. Height varies somewhat by registry standards, generally ranging from 10 to 15 inches at the shoulder, with weight proportionate to height, typically between 11 and 18 pounds. The body is slightly longer than tall, with a flat back, well-sprung ribs providing adequate heart and lung room, and a deep rather than wide chest that allows the dog to enter underground dens in pursuit of quarry. The overall impression is of a sturdy, capable working dog in a small package that can traverse any terrain. The head is flat and moderately broad between the ears, narrowing gradually toward the eyes with a defined but not pronounced stop. The muzzle is strong and slightly shorter than the skull, with powerful jaws and a complete scissor bite essential for the breed's original function. The eyes are almond-shaped, dark, and keen in expression, conveying the alert intelligence characteristic of the breed. Ears are small, V-shaped, and drop forward close to the head, with the fold level with or slightly above the skull. The nose is always black and fully pigmented. The neck is clean and muscular, of good length, gradually widening to the shoulders. Three coat types are recognized in Jack Russell Terriers: smooth, rough, and broken, which is a combination of both textures. All coat types are dense and weather-resistant, providing protection during outdoor work in all conditions. The predominant color is white, comprising at least fifty-one percent of the coat, with markings in tan, black, or brown typically appearing on the head, ears, and base of the tail. The tail is traditionally docked in working dogs, set high and carried erect, though natural tails are increasingly common where docking is prohibited. The breed's compact, athletic build and flexible chest enable remarkable speed, agility, and the ability to navigate underground burrows.

Key Characteristics

Temperament
Temperament Temperament Temperament Temperament Temperament Temperament While Jack Russell Terriers can make devoted family companions, they are not recommended for homes with very young children due to their high energy and low tolerance for rough handling. They can be assertive with other dogs and may initiate conflicts despite size disadvantages, displaying the fearlessness that defines terrier temperament. Early socialization is crucial for developing appropriate behavior around other animals and people. Jack Russells form strong bonds with their families and can be affectionate and entertaining companions for active owners who appreciate their spirited, sometimes mischievous personalities.
Health Considerations
Health Considerations Health Considerations Health Considerations Health Considerations Health Considerations Health Considerations Deafness, particularly in predominantly white individuals, occurs in the breed and may be present from birth or develop over time. Reputable breeders use BAER testing to identify hearing status in breeding dogs and puppies. Epilepsy affects some Jack Russell Terriers and requires lifelong medication management in affected dogs. Dental disease develops readily without proper oral hygiene, and skin allergies can cause discomfort for some individuals. Hyperuricosuria, a condition affecting uric acid metabolism, has been identified in the breed and can lead to bladder stone formation. Regular veterinary care, appropriate health screening, maintaining a healthy weight, and providing adequate exercise contribute to the breed's excellent potential for longevity and quality of life.
Learn More About The Jack Russell Terrier

Important to Remember

Each hybrid dog is unique and may inherit any combination of traits from either parent breed. The information above represents the characteristics of the purebred parent breeds. Your Cav-A-Jack may favor one parent over the other or display a blend of both. We strongly encourage you to read the complete breed profiles for both the Cavalier King Charles Spaniel and Jack Russell Terrier to fully understand the range of possible temperaments, health concerns, and care requirements.