Tosa Inu


The Tosa Inu is a large breed with a very strong build. It has a large and wide head that is somewhat wedge-shaped. Wrinkles at the crown of its head are very characteristic of this breed. The ears are average in size and set above eye level. The ears usually hang down at the chin. It has a body that tends to be long across its torso. The limbs are well muscled and straight. Its tail is somewhat long and is carried loosely at the hocks. It has a coat that is very short and lies flat.


The Tosa Inu is a suitable family pet as long as its owner is firm and controlling. A timid owner is not suitable for this breed. Despite its size, it is suitable for children as long as they are not very young or very small. It protects its family and is an effective guard dog and watchdog. It is a breed that responds well to training, as long as its trainer is firm in handling. It may not coexist peacefully with other dogs and pets in its home.

Height and Weight

The Tosa Inu can stand as tall as 25 inches tall and weigh as much as 200 pounds.

Health Problems

The Tosa Inu may develop problems with its eyes. Joint problems and bloat are also common in the breed.

Ideal Living Conditions

While the Tosa Inu is a large breed, is can easily adapt to living indoors and outdoors. The breed will require more physical activity if it resides indoors.


If the Tosa Inu resides outdoors it will usually get sufficient exercise. If the breed spends most of the day indoors it should be taken outdoors daily for exercise. The breed is fine with a long walk or more vigorous activity.

Life Expectancy

The Tosa Inu has an average life expectancy of 10-12 years.

Litter Size

The Tosa Inu has an average litter size of 5 puppies.


The coat of the Tosa Inu is smooth and lays close to its skin. The coat only requires light brushing to keep it in good shape. This breed’s coat only sheds lightly a couple of times each year.


The Tosa Inu was developed in the late 1800s by crossing a number of large breeds




A solid color or multi-colored coat is acceptable for the Tosa Inu. A solid coat is typically yellow, grayish-brown, or black. The most common multi-colored coat is light brown and black.