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Japanese Mastiff (Tosa Inu)
Large Breed
The Japanese Mastiff is a very loyal and brave breed. They form a very strong bond with their owners and become attuned to the mood of their masters.
Breed standards
Country of origin
Japan
Weight
40 kgs (88lbs) (standards may vary)
Height
Male 60cm / 23 1/4 inches; Female 55cm / 21 1/2 inches (standards may vary)
Coat
Hair is short, hard and dense
Markings
Red, fawn, apricot, black and brindle. Slight white markings on chest and feet.
Lifespan
10-12 years
They will protect their owners with all their might, making them extremely good watchdogs and guard dogs. Their intelligent nature has helped to make them a first choice companion and working breed.
Temperament
The Japanese Mastiff is a very loyal breed, usually devoted only to one master. An intelligent breed who can be very patient, it makes a better companion for individuals than families. They are bold and courageous and are distrustful of strangers. Extensive socialisation from a young age is essential, as is firm and consistent training.
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PoorChildrenGood
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VeryCombativenessNot very
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VeryDominanceNot very
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Not veryFriendlinessGood
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Not veryIndependenceVery
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LoudNoiseQuiet
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Not veryTrainabilityVery
Good to know
The Japanese Mastiff is a powerful large breed of dog with a naturally strong guarding instinct making it a good protection dog. The Japanese Mastiff was originally bred as a fighting dog.
- Makes a loyal companion
- A truly fantastic guard dog
- No trimming or stripping required
- Happy in most climates
- Not recommended with other dogs
- Not a dog recommended for novice owners
- Requires sufficient daily exercise
- Can be prone to bloat, eye problems and joint problems