Irish Jack Russell vs Fila Brasileiro - Breed Comparison

Originating in the United States of America, the Irish Jack Russell, also known as Short Jack Russells, was bred to bring about a calmer temperament and to also have a dog with shorter legs.

Always a working dog, breeders of the Irish Jack Russell wanted to create a dog with less of a hunting instinct in him and have a dog which would be more companionable.

These Irish Jack Russells look much like your regular Jack Russell but are more of a companion dog than a hunting dog. The Irish Jack Russell doesn’t adhere to any existing Jack Russell breed standard and isn't really recognized at major dog clubs and kennels. The truth of the whole matter is that there are different kinds of Jack Russells and different names given to them to differentiate between the taller Jack Russell and the short legged one. The shorter Jack Russell Terriers are known by many names such as Irish Jack Russell and Shorty Jack Russells.

Hailing from Brazil, and known also as the Brazilian Mastiff, nobody seems to be too sure of the exact origins of the large Fila Brasileiro but it is believed to be a cross between the English Mastiff, the Bulldog and the Bloodhound.

Other theories are that the dog comes from a mix of Portuguese and Spanish dogs and that they were bred to guard livestock from predators. Breeds that have no doubt contributed to the modern Fila are the Bullenbeisser, the Bloodhound, Mastiff and Rafeiro do Alentejo. All these dogs have characteristics such as excellent working dog skills, herding instincts as well as courage and tenacity.

The official Brazilian breed standard of the Fila was developed in the 1960s and the Fila Brasileiro Club of America was formed in 1984.

Irish Jack Russells are small dogs standing at roughly 18 to 35cm and weighing in the region of 5 to 8kg for both males and females.

He looks much like your regular Jack Russell but he has shorter legs, and where the regular Jack Russell has an essentially white coat with orange-tan patches, the Irish Jack Russell can be solid tan or other color variations such as red, brindle, black and tan.

The coat can be short or fairly long and coarse. The Irish Jack Russell is a sturdy, compact dog with a flat skull, brown eyes and ears which are semi-erect, semi-floppy. He has a bright, alert, intelligent look on his face. The tail is set fairly high and has always been docked but these days it is inclined to be left long, taking away from the dog’s nice compact look.

Temperament:

The Irish Jack Russell is perhaps more placid than the regular Jack Russell and that is why he can adapt to life in the city or in the country. They’re intelligent dogs and therefore easy to train and have socialized.

Even though he is a small dog, training and socialization is important as he is a feisty, stubborn, know-it-all little dog. These are dogs which can become possessive of their owner and they can become quite aggressive when protecting their family. He is a highly trainable dog but it is important to have him trained as he tends to be aggressive with other dogs.

He is busy, active, happy and inquisitive and will require regular exercise to prevent him becoming restless and destructive. He has been a working terrier and he always wants to be busy.

With his huge head covered in loose skin much like that of a Blooohound, and a body resembling that of a Mastiff, the large heavily built Fila Brasileiro is a mastiff breed from Brazil. He stands at 60 to 75cm in height and he weighs roughly 55 to 80kg.

The ears of the Fila are large and droop down or are folded back, depending on his mood. The tail is long and slim. The coat of the dog is short and dense with the texture being quite smooth and soft. Colours of the coat can vary from solid fawn or black to red to brindle.

Temperament:

Perhaps the huge Fila wouldn’t be a good choice as a pet for the first-time inexperienced dog owner as he is a powerful, intelligent, self-assured, headstrong animal that will certainly need to have training and socialization if you want him as an obedient pet in your home.

He is a dog known for his courage and bravery. The Fila is loving and affectionate with his human family, being protective of them and not being too friendly with strangers. He isn't a particularly good pet choice with children in the home.

Some people, after buying a cute Fila puppy, put him out in the yard when he becomes large, and then they pretty much neglect him. This is cruel and irresponsible as he is a social, playful dog who wants to be part of his human family.

These dogs have some aggression in them and this makes them good watchdogs. They generally don’t show aggression towards their family but may snap at a stranger who tries to touch as he feels threatened.

The Irish Jack Russell is a self-confident, energetic dog who will like nothing more than to be involved with everything you’re doing. The busier he is the better, and because he has strong hunting instincts you may find him digging in your garden for rats.

Have him trained and socialized if you want to avoid certain problems with him and remember to exercise him and provide him with the attention he craves.

He is a social dog and will pine away if you just leave him to get by on his own. Make sure that he becomes every bit as part of your family as everyone else and he promises to make you a loyal, devoted companion.

The Fila Brasileiro or Brazilian Mastiff is a powerful dog and it is believed that a large dog like this can be a danger to people if he isn’t trained and socialized.

He is therefore not recommended for first time dog owners or homes with small children. He is a dog that is particularly wary of strangers too.

When he has been properly socialized he can be loving, loyal and obedient because it is essentially how a dog is brought up as to how he turns out.

If you bring one of these big, beautiful dogs into your home, have him socialized as a puppy, treat him firmly, but kindly and you could have yourself an extraordinary pet.

Your Irish Jack Russell is a dog that doesn’t battle with too many health issues, but nonetheless you still need to watch out for common health problems.

Jack Russell terriers are generally a healthy breed that can live up to 14 years of age, but still every dog is prone to the more common dog problems such as hip dysplasia, bloat, ear infections and dental disease among others.

If your Irish Jack Russell is in pain, he is lethargic and sick, don’t delay – take him to the vet right away.

Filas are a dog breed who have a high rate of hip- and elbow dysplasia. This is a serious disease which can lead to lameness with your pet. Other orthopedic diseases with the breed include osteochondritis and luxating patella.

Also, as a deep-chested dog breed, your Fila also is at risk of getting the very serious gastrointestinal syndrome known as bloat. This is a common condition that can prove deadly for your pet. The Fila’s stomach will fill with gas, putting pressure on other organs and stopping blood flow to the heart and difficulty with breathing. Sometimes the stomach will twist. Get him to the vet immediately if you notice a swollen stomach, drooling or restless behaviour.

Grooming:

The Irish Jack Russell is an average shedder with his short or longish coat which is easy to groom, requiring a brush once or twice a week. His nails grow quickly too and they can get caught on something and cause him damage. Trim your pet’s nails to prevent this.

Diet:

Feed your Irish Jack Russell good quality dog food each day. If you feed him commercially manufactured dog food, be certain to check the feeding instructions on the packaging.

He is a small dog, and overfeeding can be just as bad as under-feeding. It’s never a good idea to just go on and on feeding your pet dry or wet kibble day after day. Add in some cooked chicken, rice, pasta and vegetables as a treat and to also provide some variety for him.

Also a little bit of raw meat occasionally can do him the world of good and you’ll see the appreciation in his bright eyes and wagging tail.

Exercise and Space:

The Filas size makes it important that he have a good amount of exercise if you want to maintain his health and happiness. He isn’t a dog suited to city life as he is too large and will irritate his owners when cooped up in a tiny space with them. He isn’t demanding when it comes to exercise and activities all the time, but he should still be exercised regularly as he is inclined to become lazy .

Grooming:

Moderate shedding. Regular brushing twice a week will be required. Check ears for infection and brush his teeth 2 or 3 times a week.

Diet:

Nothing is set in stone as to what to feed your Fila Brasileiro, but a large dog will require quality food with a good amount of protein and fat according to size, age and activity levels.

Because a large breed dog is prone to hip dysplasia, look out for ingredients such as chondroitin and gludosamine which are specifically good for joint health. Try and avoid commercially manufactured food with common allergens such as soy, corn and wheat, artifical flavors and fillers.

A source of cooked rice, chicken and vegetables as well as some raw meat will be excellent for your big pet. Make sure he is never deprived of fresh, cool drinking water.