Kai Ken vs Bullenbeisser - Breed Comparison | Petzlover

Known also as the German Bulldog, the Bullenbeisser was a strong dog which is now unfortunately extinct. There were two regional types – the Brabanter- and the Danziger Bullenbeisser.This Molosser-type dog was native to Germany and was bred for different hunting purposes.

Nobody is quite sure what dogs are included in Molossers, but they are essentially large dogs bred to hunting and rescue, tending to have a shorter muzzle. The Bullenbeisser is famous for the role the dog has played in the development of the wonderful dog we have today, the Boxer. In fact, some Bullenbeissers were crossed by the Boxer Kennel Club of Germany with Bulldogs from the UK.

Not much is known about the history of the Bullenbeisser, but the breed also has a history in the lands of the Holy Roman Empire. The dog was at first a type of Mastiff, large and with the typical brachycephalic head, and used for hunting because of their power.

To improve their dogs, many Bullenbeisser breeders began crossing their dogs with English Bulldogs, introducing a white coat to the Bullenbeisser. Other breeds were also crossed with the dog such as the Bull Terrier, but by the end of the 19th century, the traditional Bullenbeisser was slowly dying out. It was in the late 1870s that German breeders, Hopner, Konig and Roberth used the dog to bring about a new breed, which today is known as the Boxer.

The Kai Ken dog hails from Japan and is both an ancient and rare dog. In fact the dog was discovered in 1929 in the Kai province near Mount Fuji. The dog has the nickname Tora Inu in Japan which means 'Tiger Dog'. Maybe its got to do with the brindle striped coat or his bravery.

He falls into the working class category. In 1931, the Kai Ken Aigokai registry was formed to preserve the dog. In fact in this year Dasuke Adachi discovered these dogs and in 1934 was actually designated a Natural Monument in Japan and also protected by law.

The Kai Ken was recognized in 1934 by the Japanese Kennel Club. It is not 100% certain but it is thought that the dog was brought to the United States in the 1950s.

The Boxers lineage comes from the Bullenbeisser. The Bullenbeisser was a fierce, courageous dog, noted for its hunting abilities. The dog was developed into the Boxer so that its body become more defined and more streamlined.

Described as a medium to large muscular dog, standing roughly 63cm in height, he would have weighed in the region of 32kg. He had a short coat, brown eyes and short to medium ears which were half erect, half floppy.

Brown to fawn in color, he had a long tail which was later docked to give the dog a more distinctive, attractive look. The dog also got its attractive fawn color from the English Bulldog. Loyal, active and loving, the Bullenbeisser was a true family dog with a close affinity to children.

The Kai Ken has always been used for hunting purposes. He comes as recommended for hunting people and those who are active.

It is a medium sized dog standing at between 43 to 56cm in height both male and female and weighing between 14 and 22kg.

The ears of the dog are erect, the muzzle is fairly tapered and the nose is black. The tail is bushy like that of a fox and curls over the back. The double coat of the dog is of medium length and harsh and is a brindle color in a reddish or black shade.

Puppies are born black and then the brindle stripe-like pattern comes in later. He has an athletic body and is a keen swimmer.

Temperament:

The Kai Ken is an intelligent dog, loyal to his human family while being somewhat reserved around strangers. They are amicable with both children in the home as well as other pets.

He is a friendly, intelligent dog, forming close bonds with his family. Have him trained and socialized and he'll make you a splendid pet who will be willing to guard you if anyone threatens.

One look at that bright face and you can see that he is an intelligent, independent dog. He is also courageous and fearless and makes a great watchdog, especially because he is naturally reserved and suspicious with strangers.

Information on the extinct Bullenbeisser is limited, but because he was used to bring about the Boxer you can be sure that he would have been fearless, courageous and territorial of his property and of his human family.

The Bullenbeisser would have been a good watch-dog and with the right kind of loving care, a most awesome and loving family companion.

The Kai Ken is a working- and hunting dog, so he is used to being active and will want a home where he can be played with and exercised regularly.

He can be slightly stubborn and independent so training and socialization are imperative. This is also because the dog’s curiosity and his athletic skills can lead to trouble if he isn’t properly trained.

Treat him the way he deserves and you’ll see that he is able to develop a strong bond with you and be altogether an excellent family pet.

In general, medium to large breeds like the Bullenbeisser have a lifespan of 10, 11 or 12 years. The life expectancy of these dogs relied much on the lifestyle they led and their diets.

The Bullenbeisser had a deep chest and this made dogs like this prone to gastric dilatation and bloat which can be life-threatening and which requires immediate veterinary intervention. The dog with this disease has distension of the abdomen and extreme discomfort, wanting to vomit but being unable to do so.

Hip Dysplasia:

Hip Dysplasia is a disease which is more common in larger dogs and is an abnormal formation of the hip socket, resulting in lameness accompanied by painful arthritis.

With a lifespan of 14 to 16 years, and given the genetic purity of the Kai Ken, you aren't likely to battle with congenital health problems with your dog, but it is always good to be aware of certain minor health issues that he could succumb to.

He can suffer from a few common dog diseases such as progressive retinal atrophy or hip dysplasia.

Progressive Retinal Atrophy:

This is a disease of the eye where there is wasting of certain parts, and in this case the cells of the retina develop abnormally. This can eventually lead to blindness. It’s an inherited disease that can occur in pure- and mixed breeds, and dogs with PRA shouldn’t be used for breeding.

It isn’t a painful condition, and the first symptom usually noticed in a dog is night blindness where you may notice him bumping into things at night and being reluctant to walk around in the dark.

Grooming:

The Bullenbeisser was a mastiff like breed with a short, easy-to-care for coat. He would have required a good brushing down at least twice a week to remove the coat from loose hairs. As an active, outdoor-type dog, he would have had to have his ears checked for dirt and the possibility of infection.

Exercise:

Although the Bullenbeisser was a hunting dog, he no doubt led an active outdoor lifestyle. Dogs such as the Boxer and the Mastiff, which are descendants of this dog are the kind of dogs which will need to be exercised regularly, taken on walks and given lots of running games with a ball.

Diet:

As a medium to larger breed with lots of energy, the Bullenbeisser would have no doubt had home-made food from his master’s table. This food would have included meat and vegetables. As a hunting dog he would have had the chance to get in some raw meat which is imperative for the health of any domesticated dog today.

Even though the coat is thick, the Kai Ken will require basic canine care, so a brush twice a week will be enough to keep the coat free of loose hair. He sheds more heavily a couple of times a year and then he will require more brushing.

He has always been used to hunt so he is a dog that will require regular exercise such as walks, hikes, swimming and ball games.

The nails of the dog should be trimmed regularly once they become long as long nails can be hazardous and can hook onto things, causing injury to the nail area.

The ears of the dog should be checked regularly for fleas and ticks, and teeth should also be brushed with canine toothbrush and toothpaste.