Discover Everything About Tosa
Learn about the breed characteristics, health, history, and find trusted breeders
Breed Profile
The Tosa Inu, also known as Tosa-Ken or Japanese Mastiff, is an impressive dog with a large build. It is one of the largest dog breeds, with a broad head, powerful jaws and a deep, strong body. His eyes are small and dark with a calm and intelligent expression. The Tosa Inu's ears are rather small, set high and hang close to the head. Its short, hard coat is easy to care for and comes in a variety of colors including fawn, black, brindle, red and yellow. The Tosa Inu belongs to FCI Group 2: Pinschers and Schnauzers, Molossers, Swiss Mountain Dogs and other breeds. There are no official differences between performance and show lines in breeding the Tosa Inu.
| Height | 55 - 55 cm (Female), 60 - 60 cm (Male) |
| Weight | 40 - 50 kg (Female), 45 - 60 kg (Male) |
| Life Expectancy | 10 - 12 years |
| Character | Loyal, courageous, gentle |
| Coat | Short, hard, no undercoat |
| Coat Color | Fawn, black, brindle, red, yellow |
| Price | 1500 - 2500 € € |
History
The Tosa Inu comes from Kochi Prefecture, Japan, and was developed there in the late 19th century. The breeders wanted to create a large, courageous dog that could be used for mastiffs, a traditional form of dog fighting in Japan. The Tosa Inu is the result of crossing native Japanese breeds with Western dog breeds such as the Mastiff, St. Bernard, German Shepherd and Bull Terrier. The Tosa Inu breed was officially recognized by the Japan Kennel Club in 1934. The FCI (F"d"ration Cynologique Internationale) recognized the breed in 1973. Despite its size and strength, the Tosa Inu is recognized as a "National Natural Beauty" in its native Japan. and recognized as a living natural monument. However, in some countries and regions the breed is restricted or even banned due to its size and history as a fighting dog.
The Tosa was originally bred for dog fighting in Japan and later used as a guard dog.
Japan
1870
Character & Temperament
The Tosa Inu comes from Kochi Prefecture, Japan, and was developed there in the late 19th century. The breeders wanted to create a large, courageous dog that could be used for mastiffs, a traditional form of dog fighting in Japan. The Tosa Inu is the result of crossing native Japanese breeds with Western dog breeds such as the Mastiff, St. Bernard, German Shepherd and Bull Terrier. The Tosa Inu breed was officially recognized by the Japan Kennel Club in 1934. The FCI (F"d"ration Cynologique Internationale) recognized the breed in 1973. Despite its size and strength, the Tosa Inu is recognized as a "National Natural Beauty" in its native Japan. and recognized as a living natural monument. However, in some countries and regions the breed is restricted or even banned due to its size and history as a fighting dog. 3. Essence and character Despite their impressive size and history as a fighting dog, Tosa Inus are known for their calm, gentle and friendly nature. They are brave and loyal, but also gentle and patient, especially towards their family. This makes them remarkable companion dogs, but they require clear leadership and consistent training. Developed as a fighting dog, Tosa Inus are naturally very independent and can easily learn to stay alone. They are also known for their alertness, without being overly barky. Thanks to their origins, Tosa Inus are very resilient animals that can handle stress and new situations well. They are very focused and alert, which makes them excellent watchdogs. Tosa Inus are generally calm and balanced, but can also be active and playful, especially as puppies. They enjoy long walks and playtime, but they don't tend to be hyperactive. They are happy and content as long as they get enough exercise and mental stimulation. When it comes to their relationships with humans, Tosa Inus are often reserved and reserved around strangers, but they are extremely loyal and devoted to their family. They are known to get along particularly well with children and to maintain a patient and loving relationship with them. Despite their size, they are careful and gentle around children and smaller pets. The Tosa Inu does not normally exhibit strong hunting behavior, but like any dog, can instinctively pursue prey. This is especially the case if they have not been adequately socialized or trained to control their natural instincts. It is important to begin socialization and training early to ensure they integrate well into the family and society.
| Trainability | |
| Watchfulness | |
| Openness to Strangers | |
| Hunting or Herding Drive |
The Tosa Inu is the only breed that was traditionally bred for dog fighting in its native Japan, a practice that is now widely outlawed internationally and has been banned in many countries.
Fun Fact!
What Awaits You
The Tosa's temperament is characterized by patience, calmness, boldness and courage. He is usually a calm, quiet and obedient dog with a calm but alert demeanor. He has a stately demeanor and a robust build and was once bred as a fighting dog, but is now used as a guard dog.
Housing & Care
Tosa Inus are calm and patient dogs that can be kept well in both the city and the country. However, they need adequate space and exercise to stay happy and healthy. Tosa Inus are generally child-friendly, but due to their size, a supervisor should always be present to avoid accidents. They generally get along well with cats and other pets if they have been used to them from an early age.
| Family Friendly | |
| Child Friendly | |
| Dog Friendly | |
| City Friendly |
Owning a dog is not only a privilege, but also a responsibility. If you want to bring a dog into your life, you must be aware of the commitment that dog ownership entails!!
Training & Education
Raising a Tosa Inu requires patience, consistency and a good understanding of the nature of this breed. They are intelligent and capable of learning, but can also be stubborn and stubborn. It is important to start training early and do it consistently. The Tosa Inu is a working dog that enjoys taking on tasks and wants to be mentally challenged. It is well suited for various dog sports such as obedience, mantrailing or protection work. It is important to maintain balance and neither under nor overwhelm the dog. Particular attention should be paid to socialization. The Tosa Inu should be accustomed to different people, animals and environments from an early age in order to develop trust and good social behavior.
Nutrition & Care
Tosa Inus require a balanced diet that is specifically tailored to the needs of large dog breeds. Puppies should be fed special puppy food that is suitable for large breeds. Since the Tosa Inu can be prone to allergies, it is advisable to pay attention to high-quality ingredients and possibly hypoallergenic food. The Tosa Inu's coat is short and hard with no undercoat, making care relatively easy. Regular brushing is enough to keep the coat clean and healthy. The Tosa Inu sheds moderately and copes well with the German climate, but it should be protected in very cold temperatures as it does not have a thick undercoat.
| Care Level | |
| Exercise Needs | |
| Shedding | |
| Trainability |
This information is currently being reviewed by experts. If you discover an error, please send an email to info@honestdog.de!!
Health
No Health Tests Available
No specific health tests are currently available for this breed.
Sell Tosa Puppies
Breeding Tosa? Reach responsible puppy buyers and showcase your kennel on HonestDog.
Loading...
Why HonestDog?
What makes HonestDog different from other platforms
Transparency Guarantee
We provide complete transparency in the breeding process, offering detailed information about breeders, their practices, health checks, and genetic testing results in an easily understandable format, ensuring buyers can make informed decisions confidently.
Responsible Breeding Assurance
Our platform prioritizes responsible breeding practices, ensuring all breeders meet stringent criteria including health checks and genetic testing for parent dogs, eliminating the worry of encountering unethical breeders or puppy mills.
Trust and Verification
HonestDog verifies both breeders and buyers, fostering a trusted community where interactions are reliable and secure, setting a new standard for trustworthiness in the dog breeding industry.
Convenience and Time Saving
By featuring thoroughly vetted breeders and providing comprehensive information, HonestDog saves buyers valuable time that would otherwise be spent researching and vetting breeders, allowing them to focus on choosing the perfect puppy for their family.
Our Mission

We connect dog lovers with responsible breeders and shelters to ensure every dog finds the perfect home.
Founded by dog enthusiasts, our platform focuses on ethical dog breeding and adoption.
Why HonestDog?
We connect you with vetted breeders and shelters so you can find your new companion with confidence.
Vetted Partners
Only verified breeders and shelters — for a safe start.
Highest Standards
Every animal's health and wellbeing is our top priority.
Guides & Resources
Guides, checklists, and breed profiles — so you can make a well-informed decision.