Dog Profile Tosa Inu

Tosa Inu Dog Breed Information

The Tosa is a rare Japanese breed that was developed for dog fighting and has a well-muscled appearance as a result. Because this breed is potentially harmful, it is subject to numerous restrictions and prohibitions. In reality, keeping the Tosa is prohibited in some nations, including the United Kingdom, Australia, Denmark, Iceland, New Zealand, and Turkey. If you are considering the breed, you should learn as much as you can about it before purchasing to ensure that you are up to the challenge.

Tosa Inu


Dog fighting has a long history in Japan as a sport. The Tosa was designed to be a larger, stronger, and more proficient fighting dog. Europeans brought several of their prized fighting dogs to Japan during the mid-nineteenth century. When Japanese dog fanciers realized the dogs’ abilities, they began incorporating them into fight dog lines in Japan.

Another Japanese breed, the Shikoku, was used to create the breed, as well as Western breeds that had recently been introduced to Japan, such as Bulldogs, Mastiffs, German Pointers, Great Danes, and maybe other breeds.

The American Kennel Club does not completely recognize the Tosa. It is, however, a part of the AKC’s Foundation Stock Service, which is a stepping stone to ultimate full registration. The United Kennel Club recognizes the Tosa in North America. The breed is recognized internationally by the Fédération Cynologique Internationale (FCI).



The Tosa’s coat is short and smooth, and it lies close to the body. The colors of this breed is usually red, but it can also be brindle or fawn. The breed with dull black coats are feasible but uncommon. Because the coat is so short, it takes very little maintenance – brushing and bathing on a regular basis will suffice to keep the coat in good shape.

This breed sheds lightly yet drools profusely. It is a huge breed (the largest of any Japanese breed), yet its size varies depending on where it was bred. The bred in Japan normally weigh 80 to 135 pounds, however Tosas bred outside of Japan typically weigh 130 to 200 pounds. This breed typically stands between 24.5 and 32 inches tall.

  • Weight: 50 to 100 kg
  • Coat length: Short, hard, and dense
  • Amount of shedding: Low
  • Color: Red, fawn, apricot, black, or brindle
  • Pattern: None
Tosa Inu


Because the Tosa was bred for fighting, it can be a difficult dog to keep. This breed is not suitable for inexperienced dog owners, and even experienced owners may struggle with it. The breed is frequently violent with other dogs, and he is a brave protector and guardian, yet he is not normally aggressive against humans.

He can build deep relationships with family members and may be well-mannered and tranquil about the house, but he is likely to be cautious of strangers. As long as he is raised with children, this breed can get along with kids, but rough play may trigger his fighting instincts, therefore all interaction between the dog and children should be properly watched.

  • Lifespan: 10 to 12 years
  • Active: Medium
  • Intelligence: Medium
  • Vocalize: Low

Health Treatment

Responsible breeders have strived to maintain the highest quality breed standards as set by kennel clubs such as AKC. Dogs bred according to these standards tend to inherit genetic diseases. Among the diseases that need to be considered include:

  • Hip dysplasia: An abnormality in the hip socket, which can cause pain and arthritis
  • Elbow dysplasia: An ocular condition that causes the eyelids to roll inward.
  • Gastric dilation-volvulus: Bloat
  • Weight Gain: Feed measured meals twice a day as more-active Tosas need more food; less-active need less
  • Diabetes

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