Tosa vs Pugnaces Britanniae - Breed Comparison | Petzlover

Pugnaces Britanniae is a dog which is now extinct. There isn't certainty surrounding the origins of the dog but it is thought they descended from dogs brought to Britain way back in the 6th century BC already.

These are ancient dogs, and when you do research you find references dating back to centuries ago. In fact when you read of the Roman conquest of Britain you read of huge dogs, which the Romans referred to as Pugnaces Britanniae.

It is believed that the English Mastiff descended from the ancient Alaunt and Pugnaces Britanniae and that the dog was used as a war dog.

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.

Thought to be a dangerous dog breed, it is restricted in some countries.

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.

The Pugnaces Britanniae was a huge dog standing at roughly 67 to 75cm and weighing 52 to 110kg.

He was a heavily built dog, a Mastiff type dog that had a large head, broad muzzle with fairly loose skin around the mouth, brown eyes, a broad back and rump, muscular legs and floppy ears with a long tail. In fact the Mastiff, thought to have descended from the ancient Alaunt and Pugnaces Britanniae, gives you an idea of what the dog looked like. He no doubt has a short, smooth coat available in fawn, tan or brindle and with the black mask.

Temperament:

The Pugnaces Britannia was a naturally aggressive dog so it is to be expected that he wouldn’t automatically have been a good family dog, possibly being aggressive around children and other dogs. They were intelligent and were no doubt taught some simple commands.

They were also very territorial dogs, wanting to instinctively chase and attack unknown people and animals. They were strong minded, confident, loyal ad loving dogs towards their owners, being protective of them, wanting to please them.

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.

Temperament:

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.

The Pugnaces Britanniae may well have been a large dog and quite imposing to look at but he was in all likelihood a good-natured pet who got on well with his family members, being loyal and loving if brought up correctly.

Long ago dog training and socialization didn’t exist but a large dog like this would have to be socialized and trained to become obedient and an amicable all-rounder.

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 Pugnaces Britanniae could live to 10, 11 or 12 years of age with good care. Large Mastiff type dogs like this would have had to watch out for common canine diseases such as hip dysplasia, cancer and bloat.

In those days, no screening tests were available for health problems like this. Gastric dilatation volvulus or bloat is a common health issue with large, deep chested dogs where the stomach fills with gas and the stomach twists. Its a life threatening disease.

Canine heart disease is another serious health issue with these mastiff type dogs. Early stages with heart disease show there may well be no symptoms at all. However, as the heart disease progresses towards congestive heart failure, the dog will have symptoms such as fatigue, difficulty with breathing, weight loss, a distended abdomen and coughing.

A dog with symptoms like this would have to see a vet immediately.

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.

Diet:

The diets of ancient dogs were different to what they are today, as in those days there were no commercially manufactured dog foods. Dog owners in all likelihood tossed scraps to them which included starch.

Today a large dog such as the extinct Pugnaces Britannia would have no doubt been fed a high quality kibble from a leading brand and packed with minerals and vitamins specially formulated for a large dog breed.

Homemade food is also important, but not any kind of food – it has to be food which doesn’t upset the dog’s digestive system. Simple but nutritious food such as boiled chicken, brown rice or pasta, sweet potatoes, carrots and spinach is ideal for a dog, and when it is chopped up can be added twice a week to the dry kibble for a tasty, healthy treat.

Raw meat added in occasionally is also hugely beneficial. No dog should ever be without fresh, cool water constantly available.

Grooming:

As a short haired dog, the Pugnaces Britanniae would have required a brushing twice a week to rid the dog of loose hairs. Maybe in those days they didn’t check their dogs over to see that all was well, but today you would need to check the inside of the ears. If the insides were red, it could be a sign of an ear infection brought on by dampness, excess wax and dirt.

The eyes would need to be checked for discharge and the teeth checked a well. One rotten tooth can cause a lot of havoc. The nails of the dog would have had to be checked and clipped as well.

Exercise:

As a war dog, the Pugnaces Britanniae would have been fit. He is a big dog and while they require exercise such as walks and hide-and-seek type of games, he isn’t the kind of dog that would go running with you on a jog, as large, heavy dogs can overheat easily.

Diet:

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.

Cool, fresh water should be available at all times.

Grooming:

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.

Exercise:

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.