Tosa is originated from Japan but Black Russian Terrier is originated from Russia. Tosa may grow 6 cm / 3 inches higher than Black Russian Terrier. Tosa may weigh 30 kg / 67 pounds more than Black Russian Terrier. Both Tosa and Black Russian Terrier has almost same life span. Tosa may have less litter size than Black Russian Terrier. Tosa requires Low maintenance. But Black Russian Terrier requires High maintenance
Known also as the Japanese Mastiff, the Tosa hails from Japan. In fact, these dogs come from the Tosa Province, so the dog was named after the region where they were bred.
It is why they are sometimes referred to as Japanese Mastiffs. The Tosa is a rare dog breed and unfortunately, the dog is still used in Japan for dogfighting.
The breed was developed in the 2nd half of the 19th century, with a number of dog breeds being involved to bring about a more powerful, braver dog.
During the cold war, the Soviet Union developed the Black Russian Terrier as a working military dog. During the early 1950’s, the Red Star Kennel developed this breed and in 2004 by the American Kennel Club. The Black Russian Terrier is not really a terrier at all, but a mid-sized working dog used for hunting and guarding or as a pet. The Red Star Kennel is thought to have developed the BRT using a wide variety of breeds – as many as seventeen – including breeds like the Newfoundland, the Rottweiler, the Caucasian Shepard Dog and a Giant Shepard and an Airedale. So, you can see the wide variety and several more breeds were added. The Red Star Kennel in Moscow was owned by the state and they developed the BRT for specific working conditions and not for appearance. They did not really care how it looked except that it had to be black. In 1957 the state allowed a few puppies to be sold to non-military breeders. These breeders began to breed the Black Russian Terrier for appearance as well as function.
As these breeders worked with the dogs, they spread the breed throughout Russia and into Finland, Poland, Hungary, Germany, Czechoslovakia and Germany. From there they spread to Australia, Canada and the United States. The breed standard was developed in 1958 and by 1996 an updated version of the standard was developed to reflect the dog we see today. In 1996 the United Kingdom also got their first introduction to the breed. They are still rare outside of Russian or previous Soviet Union states.
The Tosa is a large dog, but their sizes vary, and in fact, because of their fighting, they are actually divided into light-, middleweight and heavyweight classes.
Generally, you can say that these dogs weigh in the region of 54 to 90kg and they stand in height at between 62 to 82cm. The head is large, the jaws powerful, the eyes dark brown in color, the ears small, high set and floppy.
The neck is broad wit a dewlap and the tail is long, thick and tapering to a point. The coat is short and thick and is most times a rich caramel color, fawn tan, black or brindle. The dog often has a black mask.
The Tosa is a fairly quiet dog, courageous and fearless. He is going to need a strong, consistent owner who shows leadership with him. Training and socialization will be imperative for this dog.
When he has been properly reared and trained, he makes a good pet, able to get on with members of the family. He takes his role as protector and guardian seriously.
A little larger than a mid-sized dog, the Black Russian Terrier is strong, powerful, stable and alert. His head is block shaped and has a broad skull. The muzzle is square with a beard and mustache. A black, large nose and full black lips are matched with powerful and large jaws. He has a scissor bite and his ears should be triangles with rounded apexes. They have very large paws that are bear-like in appearance with thick black pads. They are also covered with hair. Their legs are muscular, powerful and strong. They have a cropped tail.
The Tosa isn’t recommended for first-time dog owners, as in the wrong hands, they can become aggressive. Care has to be taken around children too especially undisciplined ones.
He also doesn't come as recommended for small, cramped homes in the city. He’s just too big and he will need to get out and be walked often.
You want to create a home for him that ensures he is the calm, gentle dog he is capable of being, If you’re fair, firm, caring, patient and consistent, then this big dog might be for you. With the right care he becomes a gentle, devoted pet.
The Black Russian Terrier is a working dog and he is confident, calm, self-assured and confident. He is responsive and intelligent, protective and fearless, loyal and aloof. He is not welcoming to strangers. If socialized well, he is enough of an independent thinker to be able to decide on his own who or what poses a threat to his family and what doesn’t. They get bored quickly because they are so smart. Keep him stimulated. These are strong, athletic dogs who will love to run with you, jog along side your bike, hike the mountain or just walk with you. Whatever your form of exercise is, the Black Russian Terrier can adapt to it. They also have a strong prey drive so don’t trust them with animals they do not know. They are ok with cats and dogs that they grow up with. They love to play with kids but be careful they don’t unintentionally knock the little ones down.
The Black Russian Terrier matures later than other dogs. Treat the puppy the way you want the adult dog to be. If you don’t want a large dog on your bed don’t let the puppy sleep on the bed. He will soon be a large, powerful and strong dog with a mind of his own and you will not be able to keep him off the bed.
The Tosa is a formidable looking molossoid, but even so, this big, calm dog can succumb to illness. Some of these diseases you need to be looking out for include bloat,hip dyslasia and eye conditions.
Bloat for this dog can be life-threatening, and can often be because the dog is too hungry and he gobbles up his food quickly. Bloat is when gas can't escape, the stomach swells and twists – very dangerous. Rather give your dog two smaller meals – one in the morning and one in the evening, or even give several smaller portions throughout the day.
To help with eliminating health issues always choose a reputable Tosa breeder. You’re not likely to find one of these dogs in a dog shelter.
This is a healthy breed who faces some of the same issues other large dogs face such as dysplasia in the elbows and hips. Then they also face their own hereditary diseases such as Juvenile laryngeal paralysis, hyperuricosuria and polyneuropathy. They are also susceptible to heart disease, eye diseases, allergies, Panosteitis and hypertropic osteodystrophy. Let’s look at the major hereditary disease that are not so common.
This occurs when the larynx arytenoid cartilages stop working and don’t operate so then the adjoining muscles don’t work either and the dog cannot swallow without the possible damage to the airway and the cannot breathe properly during exercise or while panting.
This is a condition that can occur in people and animals. This condition can lead to kidney or bladder stones as there is too much uric acid in their urine.
Like any form of neuropathy, in this disease many different nerves are damaged, and this can cause weak reflexes and tremors. There are effective treatments however.
These large, strong dogs do well on good quality food. If you opt to buy him commercially manufactured food, make sure it is the top quality one free of unwholesome ingredients such as preservatives, colorants and useless fillers.
Invest in the best quality ones that have nutritious minerals and vitamins. Try and give your dog some home-prepared food too – boiled chicken, brown rice or pasta, spinach, sweet-potatoes and carrots.
Never feed your dog things such as chocolates, peanuts, crisps, grapes, onion and food with spicy flavorings. This will just ensure digestive problems and having to get your dog to the vet.
The Tosa’s short coat isn’t going to require too much attention. A good brush twice a week will keep it free from loose hair and keep its shine and gleam. It’s why the dog is looked upon as being low maintenance.
Beyond that, he will need to have his nails trimmed. When brushing him, check him over for parasites – ticks and fleas, check for unusual lumps and look inside his ears for signs of redness.
These dogs are calm and fairly low-energy. Nonetheless, to maintain good health, he will need to be exercised. Ball games outside are always a good idea as well as nice long walks. Hikes into the countryside will be wonderful for this big dog.
This is a large, working dog that needs healthy nutrition. Feed once or twice a day but do not overfeed. Don’t let your Black Russian Terrier get overweight. Proper nutrition for puppies is critical given the nutrionally based diseases discussed below.
This is a high energy dog that needs to work. He doesn’t just want to work, he needs to work. So, find him a job and one that includes a lot of exercise. He needs consistent and firm training but will respond well and excel in Obedience Trials. They are good at Schutzhund and agility. They need plenty of exercise and will be unhappy and destructive without enough and a job. He needs to burn off that energy.