Japanese Terrier vs American Mastiff - Breed Comparison

The Japanese Terrier is native to Japan and is a rare pure bred dog. It is believed that the dog comes from Smooth Fox Terriers who arrived way back in the 17th century.

Certainly he looks very much like a regular Fox Terrier. It is thought that these smooth Fox Terriers were then interbred with local, Japanese dogs and used to hunt rats. Gradually he became a lap dog and companion.

Planned breeding of the dog began in 1920, and it was in 1930 that the dog was admitted to the Japanese Kennel Club with a breeding program being started.

Today you will find the Japanese Terrier in his home country and small numbers elsewhere. He was admitted to the United Kennel Club in 2006.

The history of the American Mastiff is entirely tied to the old European Mastiffs but in particular the English Mastiff. The developers of the American Mastiff crossed the English Mastiff with the Anatolian Mastiff at the Ohio kennel, Flying W Farms. The founder of this breed is Fredricka Wagner. Because of this the English Mastiff and the American Mastiff look very much alike. The difference between the two is that the American Mastiff was bred to have less health concerns than the English Mastiff and without the drooling. In 2000 the CKC acknowledged that the American Mastiff and the English Mastiff were separate breeds.

The Japanese Terrier is a small sized dog who stands at 20 – 33cm at the shoulders and weighs in at about 2 to 5kg.

He is a short, smooth haired dog with a tight skin and in colors of white and black. Sometimes you may find a little bit of tan color on the face too as well as 'freckles' around the neck area and legs. The black shading of the coat is essentially found around the head of the dog and also his ears.

His ears are set high on the head and are semi-erect, semi-floppy. The tail has always been traditionally docked, giving the dog a nice compact look but these days it is unfortunately often left long and then its a medium length tail which is thinly covered in short hair. The nose is black and the eye are brown, bright and alert.

Temperament:

Gentle, cheerful, intelligent, loving and loyal are some of the characteristics of the Japanese Terrier. People who have kept him as a pet will vouch for him being a wonderful companion.

He is an active dog, but he still loves to be petted and won’t do well if left alone and not part of his human family. Being a clever dog, he is easy to train, learning easily and quickly. He is quite amusing at times and you can even teach him some tricks.

He gets on well with other pets in the home as well as with children. He is alert and will make a good watchdog, alerting you to an intruder.

Because of the Japanese Terrier’s small size and sensitive nature, this breed needs a calm owner and a quiet household. It is not recommended for boisterous households.

This crossing of the English Mastiff and the Anatolian Mastiff resulted in a Mastiff with a much drier, less drooling mouth than the other Mastiffs. This is a giant, massive dog – powerful and muscular. With a wide head that is rectangular rather than square. Their eyes are dark amber, and their ears are high on their head and rounded. With a medium size muzzle, black mask and heavy head, the American Mastiff is a handsome dog.

Their chest is broad, deep with ribs that extended backward. He has strong legs that are parallel and wide set. He also has a long tail. Puppies of the American Mastiff are born almost black and as they grow their coat color lightens. In addition, it is important that they have a wrinkled forehead as well and a scissors bite is preferred.

As a pet of yours, the Japanese Terrier is an animated, contented little dog. He loves playing games and gets on well with children who aren't rough and disrespectful of him.

He is smart and gentle and loves nothing more than to sit on your lap in the evenings and be your reading- or watching-TV companion. Give him the right amount of attention as any other family member receives and he is guaranteed to make you an excellent, low maintenance pet.

A love of children and devotion to his pack (family) is bred into the American Mastiff. He is non-aggressive unless you threaten his family or his children. Then he becomes courageous, protective and defensive. This is a gentle giant most of the time, however due to size and the need for strong leadership, the American Mastiff should be socialized and trained early. If they are socialized and trained they will be calm, gentle dogs. They will remain protective and alert, but they will be friendly with strangers. They love to please their people and being highly intelligent they learn fast.

The Japanese Terrier has no particular health issues and has a lifespan of 12 – 15 years if looked after well.

There are always one or two illnesses to watch out for such as eye- and ear infections. Some dogs also develop conditions such as Patella Luxation. This happens when your dog's kneecap is dislocated. It can only be returned to its normal position when certain muscles in the back legs are relaxed and lengthened.

With this condition, your dog holds up one of his hind legs. This condition is more prevalent in small dog breeds.

American Mastiffs seem to have fewer health issues than other larger giant breed dogs. However, they can experience allergies as many large, wrinkled dogs do. They also might have a tendency toward eye issues, hip dysplasia, cancer and heart disease. Bloat might be the most life-threatening issue many American Mastiffs experience.

The Japanese Terrier is an active dog and will require exercise every day. He’ll love to join you on your walks or have ball games in your garden. He can adapt to life in the city or in the country but will always need to have good exercise.

Grooming:

The Japanese Terrier is a medium shedder and you want to be sure then to brush him twice a week to get rid of all those loose hairs.

Diet:

The Japanese Terriers will require the best commercially manufactured dog food, and instead of one large meal a day, rather feed him 2 smaller meals. You can mix some tasty home-made food into his dry kibble from time to time. Excellent home-made food would be something like cooked chicken, brown rice or pasta and some vegetables.

If you can, try to also include some raw meat occasionally. If you’re in any doubt as to how to feed your Japanese Terrier so that he remains healthy, speak to your veterinarian.

Your dog should never ever be without a continuous supply of fresh, cool drinking water.

Giant breeds like the American Mastiff are known for growing rapidly as a puppy and therefore proper feeding and nutrition is essential. The slower your American Mastiff grows, the better. Make sure your puppies get enough phosphorous and calcium in their high calorie diet. Free feeding is not recommended. Feed puppies up to 4 small meals per day and feed adults twice a day.

Health issues

As previously mentioned this breed is a fairly healthy one, There, are however, certain evaluations you should do with your American Mastiff puppy to be sure she is in good health. These tests would include an elbow and hip evaluation to check for dysplasia. He should have an ophthalmologist and cardiologist examine him as well. Most American Mastiffs will not have any problems, but these evaluations will help to prepare you if they do. The wrinkles in your dogs; face, around the eyes and muzzle must be kept clean as they can become infected if you don’t.

Exercise and games

Unlike the way he looks, the American Mastiff is not a couch potato, but neither are they a high energy, exercise machine. They do well living in apartments or homes, with or without a fenced in yard. They need a long walk every day. They need mental stimulation through exercise and games. Make sure they learn to love to play so that they don’t become lazy as they age.