Japón FCI 260 - Molossoid - Mastiff

Tosa Inu

The Tosa is quiet, serene, worthy and extraordinarily peaceful.



The Tosa It is a breed of dog originating in Japan. Molosser imposing aspect, It is one of the favorite breeds for the lovers of dogs large size around the world. The breed emerged in the mid-19th century, When crossing various European breeds of large size (Great Dane, Mastiff, St. Bernard, Bulldog, German Shorthaired) with the indigenous Shikoku.

Tosa Inu varies considerably in size. Japan-bred specimens tend to have half the size of the specimens bred in the rest of the world. Japanese copies are usually weigh between 35 and 55 kg, While exemplary foreigners have a weight which varies between the 60 and 100 kg. The mantle is characterized by short and smooth appearance and is often red, striped or brown clear. The maintenance of your fur is the least.

This breed originated in the second half of the 19th century. The race started from the natives – Shikoku, a dog of indigenous. It weighs some 25 kg and stand about 55 centimeters in height, that it resembles the European Spitz. These dogs were crossed with dogs of European races, as the Old English Bulldog in 1872, Mastiff, in 1874, St. Bernard, German pointer in 1876, Great Dane, in 1924, and the Bull Terrier. The goal was to raise a bigger dog, more powerful.

The heyday of Tosa breeding was between 1924 and 1933, When told that he had more than 5.000 Tosa breeders, in Japan.

The property of Tosa, is legally restricted in certain jurisdictions. In the United Kingdom property is regulated by the law of 1991 dangerous dogs.

Some insurance companies do not ensure homes with dogs considered dangerous breeds. The Australian Customs Service prohibits the import of Tosa, along with dogs of other breeds considered dangerous, in Australia.
The Tosa it is one of the eleven breeds of dogs, recently, prohibited by the Dublin City Council from their properties, including housing, flats and estates.

The race is illegal in Norway, Denmark, in Iceland, in New Zealand, in Malta, Australia and Malaysia, the Government of the country where said Tosa Inu are specially bred for the fight, the regulation was made in order to combat the growing number of attacks of dogs to humans, especially for children.

Did You Know?

Tosa is the largest of Japan's breeds. It is known by various names, including Tosa-Ken, Tosa dog, Tosa-Inu, Japanese Fighting Dog and Japanese Mastiff. Inu is the Japanese word for dog.

Physical characteristics

The Tosa it is a strong and at the same time elegant moloso, sporty and not very big. The official standard describes it like this:

Big dog, of strong complexion and dignified behavior. Has droopy ears, a short coat, a square muzzle and a thick hanging tail at its base.

With the Tosa, the combination between an imposing figure and an absolutely calm charisma, cool and almost patronizing is very attractive. Males must have a height at the withers of not less than 60 centimeters, females not less than 55 centimeters. No weight given. Tosa Inu hair is short, hard and dense. The Red, the fawn, the apricot, black and brindle are allowed as coat colors. Discreet white markings on chest and legs are allowed. Shy dogs, aggressive or scared are excluded from breeding.

Character and skills

The Tosa it has an absolutely great nature. Nothing can bother you so fast, true to the japanese proverb “the quietest are the bravest”. He is strongly family oriented, especially towards their master or caretaker. He is faithful to his teacher. Towards strangers is neutrally dismissive. Let the strangers paint it smoothly; let them come up to him. If you like someone, an affection, which then lasts a lifetime, comes of his own free will to receive caresses.

The standard rightly defines its nature: “Determined by patience, composure, fearlessness and courage”. This very strong dog needs a handler with canine experience and above all a sovereign calm. It's kind, devoted to people and fond of children. But it is not always compatible with other dogs. Here tends to dominate. El Tosa is sure of himself and himself, calm but wide awake. It is a stubborn dog.

The Tosa not demanding regarding external conditions. Of course: a flat in the big city is not suitable for your attitude. It is best to give him a house with a large garden. He likes to stay out, but it's not a kennel dog. La Tosa is very easy to care for. Under a competent teacher or lover with leadership qualities is a good family dog ​​and friend of children. He loves them above all. But he doesn't always accept other animals in the house.

Unfortunately, one must always have a fact in mind: It is considered a dangerous dog in many German and Austrian states. In some cantons of Switzerland, France, Great Britain and Denmark is on the list of dogs that are not allowed to have or import. Nor should you travel with him to the Netherlands, because it threatens confiscation to euthanasia, without anything having to happen.

Tosa Inu's Education

Despite its independence, the Tosa it is very docile and airshipable for a molosoid. Like all molossi, not a nervous workaholic who wants to be entertained and challenged all the time. El Tosa does what he is told. But he needs a teacher and a lover who accepts within him as a leader and that from the puppy. So he does everything and is faithful. Serious leadership mistakes are counterproductive and Tosa does not forgive them.

He understands people very well and follows them with pleasure and well on the basis of mutual recognition and respect. Whoever takes this to heart holds the key to a wonderful association between man and dog. It is recommended to train the Tosa to become a companion dog suitable for the road. Effortlessly handles it. To refuse, on the other hand, training as a protection dog for this breed. To develop its compatibility with other dogs, you should attend a good dog school with him as a puppy.

Tosa Care and Health

The Tosa has no special requirements for your care.

Breed specific diseases are not known.

Nutrition / Food

The Tosa has no special dietary requirements.

The life expectancy Tosa

The Tosa has a life expectancy of about 10 years.

Buy a Tosa

Before buying, we must be aware that the restrictive attitude of the State (list dog) causes many problems in everyday life and additional financial burdens. The breeders of the Tosa are, Unfortunately, very rare. Puppies of this breed cost around 1.800 EUR.

Tosa Reviews

Coexistence is important that you have with your new friend. Before considering the acquisition of a dog of the breed “Tosa” you know certain factors. Not all breeds of dogs are apt to live in an apartment, You must take into account their character, their need for exercise, their interaction with other pets, your care and if you have young children, their level of tolerance towards them.

Adaptation ⓘ

2.0 rating
2 out of 5 stars (based on 1 review)

Dog friendly ⓘ

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Hair loss ⓘ

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Affection Level ⓘ

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Need to exercise ⓘ

2.0 rating
2 out of 5 stars (based on 1 review)

Social Needs ⓘ

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Apartment ⓘ

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Grooming ⓘ

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Stranger Friendly ⓘ

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Barking Tendencies ⓘ

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Health Issues ⓘ

2.0 rating
2 out of 5 stars (based on 1 review)

Territorial ⓘ

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Cat Friendly ⓘ

2.0 rating
2 out of 5 stars (based on 1 review)

intelligence ⓘ

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3 out of 5 stars (based on 1 review)

versatility ⓘ

2.0 rating
2 out of 5 stars (based on 1 review)

Child Friendly ⓘ

3.0 rating
3 out of 5 stars (based on 1 review)

Watchdog Ability ⓘ

3.0 rating
3 out of 5 stars (based on 1 review)

Playfulness ⓘ

5.0 rating
5 out of 5 stars (based on 1 review)

Tosa Images


1 – Tosa during Dogs Show in Rybnik. by Pleple2000
2 – Tosa_inu and el World Dog Show and Poznań at Pleple2000
3 – Tosa_you by
4 – Tosa_you by Lilly M / CC BY-SA
5 – INSERT YOURSELF by BUKADAI..JPG: Ludivine HOUDASderivative work: Caronna / CC BY-SA
6 – Tosa_you by

Tosa Videos

Type and recognitions:

  • Group 2: Pinscher and Schnauzer- Molossoid breeds – Swiss Mountain and Cattle Dogs.
  • Section 2.1: Molossian, Dogue type. Without working trial.
  • Federations:
    • FCI – Pinscher and Schnauzer-Molossoid type dogs – Swiss Mountain Dogs and Cattledogs. Section 2.1 Molossoid, mastiff type.
    • AKC
    • UKC – Guard dog

    Tosa breed FCI standard


    Alternative names:

      1. Tosa Inu, Tosa Ken (土佐犬), Tosa Tōken (土佐闘犬), Japanese, Fighting Dog, Japanese Mastiff, Tosa Fighting Dog, Japanese Tosa (English).
      2. Tosa-Inu (French).
      3. Tosa Inu, Tosa-Kampfhund, Tosa inu/ken, osa-Hund (German).
      4. Mastiff japonês, Tosa inu (Portuguese).
      5. Tosa, Mastín japonés (Spanish).
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