American Kennel Club (AKC)
The American Kennel Club standard for the Japanese Small Size Dog emphasizes balance, soundness, and proper type. General Appearance describes a well-balanced, sturdy, compact dog with good bone and substance. The breed should exhibit a confident, alert expression with a spirited boldness and good nature. Size specifications call for males to stand 14.5 to 16.5 inches at the withers, females 13.5 to 15.5 inches. Proportion should be slightly longer than tall, in a ratio of 10 to 11 measured from point of shoulder to point of buttocks.
Head characteristics require a triangular shape when viewed from above, with a broad skull and defined stop. Eyes should be deep-set, triangular in shape, dark brown in color, and well-separated. Ears must be triangular, pricked, and small in proportion to head size. The muzzle should be firm, full, and round with a tight-fitting black nose. Neck and Body specifications demand a thick, sturdy neck blending smoothly into shoulders, with a level back and deep chest reaching to the elbow.
The standard specifies a high-set tail that curves over the back in a sickle or curled position. Forequarters should have well-developed, sloping shoulders with straight, sturdy forelegs. Hindquarters require strong, well-developed thighs with hocks well let down and turning neither in nor out. The double coat consists of a stiff, straight outer coat with a soft, thick undercoat. Acceptable colors include red, black and tan, and sesame, with proper urajiro (cream to white ventral coloring) markings on specific body areas.
Fédération Cynologique Internationale (FCI)
The FCI standard, developed in cooperation with Japan as the country of origin, provides detailed specifications for the Japanese Small Size Dog under Group 5, Section 5 (Asian Spitz and related breeds). General Appearance emphasizes a well-balanced dog of small size with well-developed muscles, constitution robust and movement nimble and free. The breed should be alert, keen, and faithful. Important proportions state that the ratio of height at withers to length of body should be 10:11. The ratio of skull to foreface should be 3:2.
Behavior and Temperament descriptions emphasize a faithful, keen, and alert nature. The breed should demonstrate a spirited boldness with good nature and simplicity. Head specifications require a broad skull with a well-defined furrow running from stop to back of skull. The stop must be shallow but defined. Eyes should be relatively small, dark brown, and triangular in shape, with rims black and tight. Ears should be relatively small, triangular, pricked, and slightly inclining forward.
Body structure demands a straight, strong back with a deep chest and well-sprung ribs. The tail sets high and is thick, carried vigorously curved or curled over the back with the tip nearly touching the back when lowered. Gait should show light, quick movement with good balance. The double coat features a hard, straight outer coat with a soft, dense undercoat. Color specifications include red, black and sesame, with clear, well-balanced urajiro markings essential to proper type.
United Kennel Club (UKC)
The United Kennel Club recognizes the Japanese Small Size Dog in the Northern Breed Group, emphasizing the breed's spitz heritage and working background. The UKC standard stresses the importance of correct size, substance, and movement for a breed originally developed for hunting in mountainous terrain. General Appearance should convey balance and strength in a compact package, with no single feature so prominent as to detract from overall harmony.
Size ranges mirror other international standards while allowing slightly more flexibility in weight ranges. Males should measure 14.5 to 16.5 inches at the withers weighing 18 to 25 pounds, while females stand 13.5 to 15.5 inches weighing 15 to 22 pounds. The standard emphasizes that dogs outside these ranges should be penalized according to the degree of deviation. Proportion should be slightly rectangular with strong, compact construction throughout.
Character descriptions emphasize the breed's natural alertness, independence, and loyalty to family members. The standard notes that while friendly with family, the breed should remain naturally reserved with strangers without showing fear or aggression. Movement should be quick, light, and efficient with good reach and drive. The double coat must provide adequate protection from weather extremes while maintaining the breed's clean, neat outline.
Other Organizations
The Japanese Kennel Club, as the breed's originating country organization, maintains the master standard from which other international standards derive. Their specifications emphasize traditional type and working ability, with particular attention to proper coat color and markings. The JKC standard provides detailed descriptions of acceptable color variations and specific requirements for urajiro pattern distribution.
The Kennel Club (UK) recognizes the breed in the Utility Group with standards closely following FCI guidelines. Their specifications emphasize soundness and proper temperament, with detailed gait descriptions requiring free, balanced movement at all speeds. The Canadian Kennel Club places the breed in the Non-Sporting Group with standards emphasizing the breed's compact athleticism and weather-resistant coat qualities.
The Australian National Kennel Council follows FCI standards while adding specific requirements for Australian climatic conditions. Their standard emphasizes the importance of proper double coat density for temperature regulation and includes additional guidance on acceptable color variations in the Australian show environment. All major kennel organizations emphasize the breed's need for proper socialization and consistent training from an early age.