Origin and History

The Tosa, also known as the Japanese Mastiff, has its roots in the Tosa Province of Japan. The breed's origins trace back to the second half of the 19th century, where it was selectively bred for its fighting prowess. It was the only dog legally allowed in Japanese dog fighting, a practice that was prevalent until the early 20th century. The heyday of Tosa breeding was between 1924 and 1933, a period marked by the establishment of the Tosa Dog Association in 1924 and the peak of dog fighting popularity. During this time, there were more than 5,000 Tosa breeders in Japan, reflecting the breed's widespread recognition and popularity.

The breed's development involved crossing the native Shikoku-Inu with European dog breeds such as the Old English Bulldog, English Mastiff, Saint Bernard, German Pointer, Great Dane, and Bull Terrier. This crossbreeding was a strategic effort to enhance the Tosa's size, strength, and fighting capabilities. The resulting dogs were bred to be powerful and large, with a focus on their ability to withstand and endure the rigors of dog fighting.

In Japan, Tosas are revered and are considered the equivalent of sumo wrestlers, a reflection of their imposing physical presence and strength. They are often depicted in wrestling accoutrements, further emphasizing their cultural significance and the respect they command.

Appearance and Physical Characteristics

The Tosa is a large, powerful mastiff-type breed, known for its calm, dignified demeanor and imposing physical presence. The breed varies in size, with Japanese-bred dogs generally weighing between 36 and 61 kilograms (80 and 135 lb), while non-Japanese breeders have focused on dogs that weigh from 60 to 90 kg (130 to 200 lb) and stand 62 to 82 cm (24 to 32 in) at the withers. This size variation is a result of different breeding goals and standards across regions.

The Tosa's coat is short and smooth, requiring minimal grooming. The color of the coat can vary, often seen in shades of red, brindle, or fawn, though occasionally it may appear as a dull black. The breed's coat is dense and lies close to the body, providing some protection against the elements without the need for frequent maintenance.

Japanese Tosas are particularly valued for their distinctive features, including a broad head, a deep chest, and a powerful build. These characteristics are a result of the breed's historical role in dog fighting and its subsequent development as a working dog.

Temperament and Personality

The Tosa is known for its calm, dignified demeanor, and it possesses a naturally quiet temperament. This breed is characterized by its stately manner, patience, and courage. It is also loyal and protective, making it an excellent guard dog.

Its low energy level makes it suitable for households with a more relaxed lifestyle.

Health and Genetic Considerations

While the Tosa is a strong and robust breed, it is not without its health considerations. Owners should be aware of potential issues such as hip dysplasia, a condition that can cause pain and mobility issues in dogs. Other health concerns include elbow dysplasia, which can also affect joint health, and bloat, a life-threatening condition that can occur in large, deep-chested breeds. Early detection and management of these health issues can significantly improve the quality of life for this breed.

Legal and Ownership Restrictions

Ownership of Tosas is legally restricted in certain jurisdictions due to their historical role in dog fighting and their powerful build. In the United Kingdom, ownership is regulated under the Dangerous Dogs Act 1991, which restricts the breeding, sale, and ownership of certain breeds, including the Tosa. In Trinidad and Tobago, the Dog Control Act 2014 also regulates the ownership of Tosas. A specific exemption from a British court is required to own and import Tosas legally in the UK.

The breed is banned or legally restricted in several countries, including Australia, Austria, Cyprus, Denmark, Fiji, France, Hong Kong, Iceland, Ireland, Israel, Malaysia, Malta, New Zealand, Norway, Romania, Singapore, Tunisia, Turkey, United Arab Emirates, and the United Kingdom. These restrictions are in place to ensure public safety and to prevent the breed from being used in illegal activities.

Use and Purpose

The Tosa was originally bred for dog fighting, but its purpose has evolved over time. Today, this breed is primarily used as a working dog. Its calm demeanor, loyalty, and protective nature make it an excellent choice for guard duty and as a companion for individuals or families looking for a strong, reliable dog. The Tosa's versatility is further demonstrated by its use in search and rescue operations, where its strength and intelligence are valuable assets.

In South Korea, the Tosa is one of the main dog meat breeds, along with Nureongi dogs, reflecting the diverse uses and cultural significance of this breed in different regions. This use is a stark contrast to its historical role in dog fighting and its current status as a beloved companion and guardian.

Buying a Tosa: A Practical Checklist

• Understand the legal restrictions on owning a Tosa in your area and ensure you can comply with them. This includes researching local laws and obtaining any necessary permits or exemptions.
• Be prepared for the breed's size and strength, as well as its low energy level and minimal shedding. Ensure your home and lifestyle can accommodate a dog of this size and temperament.
• This includes ensuring the dogs are healthy, well-socialized, and come from a good background.
• Be prepared for the costs associated with owning a Tosa, including veterinary care, grooming, and food. The breed's size and potential health issues can lead to higher costs.
• Consider the long-term commitment of owning a Tosa. This breed has a lifespan of around 8 to 10 years, so be prepared for a long-term relationship with your dog.