Irish Jack Russell vs Chihuahua - 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.

Quite a bit of the Chihuahua’s history is shrouded in mystery, and there are different versions about its origins.

While historians speculate, most will agree that the tiny dog hails from Mexico. The UK Kennel Club considers the smooth- and long coat Chihuahuas as 2 distinct breeds.It was in 1904 that the Chihuahua became a registered breed by the American Kennel Club.

Chihuahua is actually the name of a state in Mexico, and it is amazing that Chihuahua specimens were found way back in the 1800's already. Today the Chihuahua is a very popular dog breed in several countries.

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.

The small Chihuahua stands at about 15 – 23 cm and he weighs about 1,5 – 4kg.

You’ll notice that he shivers when he is excited or when he is cold or frightened. Some people buy him a jersey to don on cooler days. With this tiny toy dog, you get a short- and a long coated Chihuahua.

This is the smallest dog breed and his coat is available in a number of colors such as fawn, tan, white and black. It is the dog’s round apple-shaped head which is a distinctive feature. He has erect ears and huge fruit-bat type eyes.

Temperament:

The Chihuahua is such an alert, fun-loving, feisty little dog, and though he may appear to be an ideal pet for children, he actually isn’t. He is too dainty and frail, and a child, during play, could accidentally crush him.

It’s a pity though because he just loves being around his human family. He is also a highly strung dog, and given the chance, he’ll nip and even bite during games. It is why socialization and training are considered important for the Chihuahua.

Just like with children, how you raise and treat your Chihuahua will determine how he turns out. He is such a sweet little dog that training and socialization can remove these unwanted characteristics. He is very intelligent and responds well to training.

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.

Small and feisty, the Chihuahua’s personality isn’t set in stone, and the tiny dog can be either shy and timid or he can be social, confident and jaunty.

They're always loyal and affectionate to their human owners, but they don’t get on too well with- and are wary of small children who aren’t disciplined and who could hurt them.

With his big eyes and big ears together with his comical antics, they can be a source of entertainment for their human owners. He is easy to train too and even though he is small, he doesn’t think he is, and he is willing to use his big personality to make you a loving, loyal and devoted companion.

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.

The Chihuahua doesn't have any particular health issues, more so when you get him from a reputable breeder. With good care he can reach 20 years of age.

Hypoglycemia:

Known as low blood sugar, hypoglycemia is easily treatable, but if it isn’t caught early it can be fatal.Hypoglycemia makes a dog lethargic and he’ll shiver and could go into a coma. Get him to the vet immediately.

Bloat:

Gastric Dilatation or bloat is when the stomach twists, it becomes enlarged and blood supply is cut off to the stomach. Left untreated, it can be fatal.

Dental Disease:

Chihuahuas are susceptible to dental problems, so you will need to brush his teeth 2 or 3 times a week to prevent tartar build-up, gum disease, loss of teeth and other diseases.

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.

Diet:

Always make sure to choose a high-quality dog food for your Chihuahua as this will keep him in tip-top health. A healthy Chihuahua can live to be 20 years of age. Speak to a veterinarian for recommendations on the best type of food to feed your tiny pet.

Giving him some home-made food such as brown rice, vegetables and cooked chicken for instance will be a welcome treat for him. Make sure he always has a bowl of fresh, cool water close by.

Exercise:

The Chihuahua may well be the smallest toy sized dog breed, but don’t be mistaken – he has plenty of energy and is constantly prancing around. He is more than capable of living in a small apartment, but even so he needs to be taken outside every now and then for a game or a walk.

Be careful with your small pet though, as too much exercise can lead to elbow- and hip dysplasia.

Grooming:

The Chihuahua is a moderate shedder with Spring being their heavier shedding period. Because of his small size, you won’t be bothered by too much hair. The short haired Chihuahua is easy to maintain and with a rubber brush, you can brush him gently twice a week.

You’ll also need to clip his nails and if you can’t manage this your vet can also help you.