Both look so much like the original. Mini Jack Russells are, as the same suggests, small dogs. Their alert eyes are almond in shape and dark in color with black eye rims. The Jack Russell terrier comes in three different coat types: smooth, broken and rough (coarse, longer straight hair). Jack Russell. This dog food covers all the bases for Jack Russels. The Jack Russell terrier is a high-energy, extremely prey-driven little dog bred in the 1800s to hunt foxes. This special coat quality is not exclusive to this breed, but seen in at least 78 dog breeds. The typical price for Jack Russell Terrier puppies for sale in Spring Hill, FL may vary based on the breeder and individual puppy. Their coat is short and can feel smooth or rough. About as long as it is tall, a typical Jack Russell is. The Jack Russell Terrier. Do you have a little Jack Russell? Tell us about them! 😍 For the spoiling, nurturing and whole-heartedly pet-obsessed, The Pet Collective is a playground t. Parson Russell Terriers feature smooth or broken coat. . The Jack Russell Terrier breed was first developed in England a couple of hundred years back. The Jersey Terrier, the Jack-Rat, or the Jack-Rat Terrier as it’s known to most, is an extremely active crossbreed of the Jack Russell and the Rat Terrier. Their ears either erect like that of the Chihuahua, or with a curl-over like the terrier parent. Pitbull Jack Russell mix dogs have the potential to become aggressive. Because the Jack Russell Mixed with Chihuahua Dog is half of each parent breed, he can inherit any of Jack Russell Terrier and Chihuahua qualities. This cross or hybrid isn’t that widespread, so the odds of you bumping into one on your morning walk is unlikely, but nevertheless, the mix is intriguing. Due to its energetic and loyal personality, the Aussie Jack is ideal for many families. Smooth, broken, or rough. A Jack Russell Terrier Lab mix (the Jackador) is a small to medium dog that stands 16-20 inches high and weighs between 25 and 50 lbs. The Jack Russell Pug Mix is a hybrid of a purebred Jack Russell terrier and a purebred Pug. Introducing your Jack Russell to another dog. The Russell Terrier is a seasonal shedding breed with an easy-care weatherproof coat. It has gone through several changes over the years, corresponding to different use and breed standards set by kennel clubs. Jack-A-Poo coat colors include white, black, brown, tan, gray, and blue–and coats. This breed has a flat skull, narrow, almond-shaped eyes that are dark in color, and a black nose. The Jack Russell Terrier is a small to medium-sized dog, weighing between 13-17 pounds. Last Updated : 4-Nov-2023. He wanted to create a dog breed that could hunt with hounds – these dogs would force foxes from their dens so the hounds could chase. The American Canine Hybrid Club. Eyes. They have well-defined stops along with. The coat can be smooth or rough. Dogs of this size need approximately 450 to 650 calories per day, depending on their activity level, according to the National Research Council of the National Academies. This breed is considered a true working terrier and was named after John “Jack” Russell, a dog breeder from the United Kingdom. The purpose of the JRTCA is to protect and preserve the unique characteristics. It is recommended to get this dog only if you have sufficient experience in raising similar. Choose a well-balanced dog food that is rich in protein and one that doesn’t contain too much wheat or corn. Jack Russells are good dogs for people who are happy to devote at least an hour a day to substantial, play-filled walks. No matter what type of coat one may have, they can all grow to a height of 10 to 15 inches when fully grown. December 20, 2022. Since 2003, Jack Russells have been moved to the Parson Russell Terrier cathegory by the American Kennel Club [2]. All three coat types consist of an undercoat and a harsh and dense outer coat. In addition, Jack Russells should be trimmed every few months to help manage their coat and keep it looking neat. Both Jack Russells and Pitbulls are known to engage in aggressive behavior. Facts and data . They started life as a cross breed from the now extinct White Terrier. Jack Russell Chihuahua Mix puppies are normally born in litter sizes of between three to five. A Jack Russell's tapered. 1. interactions. The main differences between the Jack Russell and other Russell breeds is that the Jack Russell is maintained primarily as a working dog, where its variants are often bred for conformation. Band manager Alan Niven and Kendall decided to change the name of. 10. By the 1930s, Jack Russell Terriers became one of the most popular dogs for hunting. The Jack Russell is often confused with two other recognized breeds, the Parson and the Russell terriers. Since these dogs' lifespan is 10-15 years, a senior Jack Russell Terrier is one eight years old or more. Height: 10 to 11 inches. These adorable little munchkins are looking for. A Jack Russell Australian Shepherd mix is usually a small- or medium-sized pup that measures between 15 and 18 inches at the shoulder and weighs around 20 to 35 pounds. The Jack Russell Terrier has a strong rectangular frame. The length of back from withers to set-on of tail is slightly longer than the dog’s height at the withers. Lifespan. Jack Russell Terrier or the Parson Terrier is the same breed, which is just known by different names, these little energy bundles will light up almost any home with their antics. 3. Yes, Jack Russells bark a lot. The JRT, as it’s sometimes referred to, is both an agile hunting dog and a fun-loving family companion. A Jack Russell Terrier Lab mix (the Jackador) is a small to medium dog that stands 16-20 inches high and weighs between 25 and 50 lbs. Originally, the Jack Russell was kept as a hunting dog, way back in the 19th century. 14 weeks old. The Jack Russell Terrier and the Russell Terrier are the same breed, but are entirely a separate breed from the Parson Russell Terrier. The Jug will generally be the same compact size as its parents and usually sports a round head and. Even though the Jack Russell Terrier was bred for a certain purpose, this breed was actually named after Reverend John Russell (or Jack, as he was called), the man who developed the breed. However, some researchers have guessed that Jack Russell Pug Mix’s origin could have happened in the 1960 – the 1970s somewhere in the USA. Little Eden is a New-York based breeder with more than 30 years of experience working, showing, and breeding Jack Russell Terriers, which is a clear indication of their expertise in the field. Jack Russell Terrier ears are small and V-shaped and tend to fold over at the midpoint. The Jack Russell is usually smaller and is bred to catch rats. You don't want a naughty Jack. The breed gained its recognition in 1998. Types of Jack Russell: Smooth, Broken and Rough-Coated. Your puppy might also be prone to. If you lead an active lifestyle, the Jackador’s energy levels will benefit from lots of activity. This mix sometimes occurs naturally and sometimes it is the result of intentional breeding. This breed sports a distinctive white coat featuring splotches in brown. These small dogs are popular with children and grown ups alike. The Jack Russell Terrier is a much beloved pet, renowned for their intense energy and sprightly intelligence. Both breeds were developed in England for fox hunting. The Jack Russell Terrier is a small, agile, active hunting terrier, built to go to ground. The Chihuahua Jack Mix Russell Terrier could be anywhere from 8 to 18. They are the perfect combination of two of the most popular breeds around. Friendly, intelligent, energetic, stubborn, and loyal. The Jug is a hybrid dog obtained from crossing a Pug with a Jack Russell Terrier. A sporty breed with a curious personality, the Jack Russell terrier, won’t hesitate to trot right into your heart. Health The Jack Russell terrier comes in three different coat types: smooth, broken and rough (coarse, longer straight hair). Before doing so, you may want to know some key specifications of the breed, such as a Jack Russell’s lifespan and other physical characteristics. Get the latest news, live stats and game highlights. Dogs grow to be from 20-30cm in height. The Fox Terrier is more considerable and weighs a little more than the Jack Russell. This Scottish terrier pumpkin carving will make for the cutest jack-o'-lantern in the neighborhood. co. The club’s breed standard reflected Heinmann’s breed standard from 1904. The mixed terriers were created when a Jack Russell was crossed with a different type of dog. Phone : 0275262800. Jack Russell Puppies. sixarmybrats says Yes: “ Jack Russell Terriers are extremely HIGH energy, and I’d say the highest of the terrier breeds They are super intelligent dogs; but they’re ‘nervous in the service’ as I like to call it. The preference for a Jack Russell Terrier for sale is that she be mostly (51% or more) white with patches of color. This is also known as the first generation dog or an F1 mix, and this is the only type of Jack Tzu that is currently bred. Increasingly popular, designer dogs offer an array. About the Breed. The Berner is also a powerful dog, which is why he was the canine of choice for pulling heavily laden carts in. Join our club . The Jack Russell Terrier is strong and sinewy with long flat muscles in hard condition. Stack of Jugs (Jack Russell Terrier / Pug mixes)—"Otto on the bottom is 1/4 Jack Russell Terrier (his mum was half and half), Phyllis in the middle is 1/8 JRT and their son on top Solo was the only one in his litter. Standard plemene rozeznává tři varianty: krátkosrstou, lámanou a drsnosrstou. In dog years, Meg was an impressive 113 years old, defying the odds and living well beyond the average life expectancy for her breed. Jack Russell’s desire to please their owners using their intelligence and ability to work. Rich Moore, 71, of Pagosa Springs, Colorado, set out with his Jack Russell terrier named Finney to climb Blackhead Peak on Aug. The hair will grow in different directions, and its length will vary from an inch to a couple of inches. The Jug dog has been created by crossing the Jack Russell Terrier and a Pug. 7. Although Poodles and Jack Russells look very different, their ancestors are both hard working, hunting breeds. Find Jack Russell Terrier puppies for sale. By the time the puppies are six months old, they’ll weigh between 9 and 11 pounds. The children must know how to treat the dog. Learn more. This breed was solely developed by a man named John Russell – a reverend from Devon England. . Are Jack Russells Aggressive? July. 92. The Jack Russell Terrier is a cheerful, merry, devoted and loving dog. Jack Russell Terriers for sale should be about 10 to 15 inches tall at the shoulders. They are considered a "designer" hybrid breed and have become steadily more popular over the last 10 years. Jack Russell Terrier and Parson Russell Terrier Behavior Differences. They usually have a mostly white coat with patches of tan or black. Because the Jack Russell Chihuahua Mix is a hybrid dog, there isn’t a breed standard, or consistent generational breeding. According to the club, there is no ideal. This canine breed varying from toy to medium size is small-chested, having triangular-shaped ears. It is muscular, compact and energetic. 2. Although small, the Jack Russell Terrier isn’t a short dog but depends on perfect. Smooth, broken, or rough. The rest of this brief post will detail what factors impact how big a Jack Russell Terrier. It has a small body structure with a lighter physique compared to a pug but is as strong as the Jack Russell. Dkpw says Yes: “ He was the most intelligent dog we’ve ever owned, was great fun and loved adults. and working heritage of this great little terrier. Here are 10 dog breeds similar to the Jack Russell Terrier drawn from Good Housekeeping’s list of small companion dogs: 1. The breed was developed by a reverend named Parson John Russell. The tails of working terriers were originally docked to prevent injury while traveling underground when following rats and badgers. There are two. They are widely known as a small dog with attitude. They are relatively free from any serious health complaints. SoCal Health Tested Russell Terrier Puppies. About Jack Russells. Height – 10 to 15 inches (to shoulder) Weight – 13 to 17 pounds. . 1. 1 cm) tall. This test panel is useful to breeders who wish to track and increase. Jack Pug, known as Jug, is a designer dog that resulted from a mix between Jack Russel Terrier and Pug. As well as any other mix involving Pit Bulls and the Jack Russell Terrier, the Bully Jack Terrier is a small to medium-sized dog. Bogan gate New South Wales. However, this dog usually inherits the smarts and loyalty of the Miniature Poodle along. It has a small body structure with a lighter physique compared to a pug but is as strong as the Jack Russell. The Jack-A-poo is a hybrid dog with the sweet temperament and appearance of a poodle, but with the playfulness and intelligence of a Jack Russel terrier. " "Benedict, Florence and Nooner, Jug puppies at 8 weeks old—their parents are both Jugs. If you were to describe the Toy Foxy Russell in just three words, it would be a little pocket rocket. The Border Jack, known for its intelligence, athleticism, and bold nature, is a medium-sized cross between the two purebreds – Border Collie and Jack Russell Terrier. Compact and cute, this designer dog is loaded with personality. Jack Russell Terrier temperament, personality, training, behavior, pros and cons, advice, and information, by Michele Welton, Dog Trainer, Behavioral Consultant, Author of 15 Dog Books If any dog can top the high energy level of a Fox Terrier, it might be a Jack Russell. by the 1930s and the Jack Russell Terrier Association of America wanted recognition by the American Kennel Club, which was granted in 2000. Call/text 918-850-5686 . Bred for foxhunting in rural England, these. You will often hear the words vivacious and live wire associated with this breed. has officially. A Jack Russell’s life expectancy is 13-16 years, while a Parson Russell can live up to 15 years. The Parson Jack Russell Terrier is named after the Reverend John Russell (nicknamed “the Hunting Parson”), who bred a strain of terriers for hunting foxes in Devonshire, England in the mid to late 1800s. This hybrid breed is a result of breeding a purebred Jack Russell Terrier with a purebred Chihuahua. The second incarnation, Jake Gomez, first appeared in Werewolf by Night #1 (October. Their alert eyes are almond in shape and dark in color with black eye rims. The Bo-Jack mixes the Boston Terrier with the Jack Russell, creating a highly playful yet very well-natured pet. Because of the rise in popularity of low-shedding dogs, Poodles are often used in the creation of Designer Dogs and this pooch is a classic example of that cross-breeding. Height: Up to 12 inches. The distance is the circumference. By following these simple tips, you can help keep your Jack Russell’s. Like many of his countrymen, the Reverend Russell had a passion for fox hunting. 15. One of the factors. They look alike and share a common origin but are three different breeds of dogs. The lifespan of the Pit Bull Jack Russell Terrier mix is between 10 and 15 years. Jack Russell Chihuahua Mix lifespan Thanks to the Jack Russell, this designer mix has a long lifespan of approximately 13 to 15 years. John Russell. Some pups have the mottled or speckled blue coats like the Blue Heeler , while others may have bicolor or tricolor coats carrying white, black, and tan markings . The differences in behavior, personality, and the dog itself will be derived from the breeding itself and the bloodline of the Jack Russell Terrier. The Jack Russell Terrier is a pint-sized dog with a big-dog attitude. The Jack Russell ©Sundays Photography - Shutterstock Generally speaking, Jack Russells are full of energy, playful, and have a tendency to be a little bit stubborn! They’re also one of the more vocal breeds, so socialisation and training are really important when it comes to Jack Russell puppies. Not only this, but the Puli also actively looks for a sporty canine companion to get rid of its separation anxiety. The breed has a compact, muscular body. Although they are similar, they are fundamentally different. The Jack Russell Terrier is full of energy. The best way to determine the temperament of a mixed breed is to look up all breeds in the cross and know you can get any combination of any of the characteristics found in either breed. Because of these two reasons you. The Chihuahua is the smallest dog breed and a member of the toy group . They have white-colored coats with black or pale brown patches. As stated at the beginning of this post, a Jack Russell Terrier is a dog born to hunt and has the prey drive to get the job done. Height 10-12 inches Weight 9-15 pounds Life Expectancy 12-14. Through the dog’s lifetime, the average cost of owning a Jack Russell Terrier is $15,405. STANDARD. A loyal-beyond-the-call-of-duty pup has been reunited with family after standing guard over her owner’s body in the wilderness. All Jack Russells come from one dog, and one man. Reverend Parson John Russell was an avid fox hunter who loved breeding hunting dogs in England. Jackapoo puppies are intelligent, active and loyal. A Jacktese with one Jack Russell parent and one Maltese parent is known as a first generation Jacktese. Below are a few quick comparisons between the two breeds. Jack Russell Terrier. This breed is notoriously fearless and requires little encouragement to go to ground. 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. In England, the Jack Russell and the Parson Russell have always been two distinct breeds. As a small-sized breed, Jack Russell Terrier puppy development stages typically span 15-17 months from birth to full maturity. The Jack Russell Terrier is a dog with so much personality and even more energy. Jack Russell’s can reach speeds of 25 mph or 40. Your Jack Russell will love making new friends. With its fun-loving personality, this canine is an excellent family pet. 31, 2023, in Pagosa Springs, Colo. How tall was Jack Russell? Jack Russell was 6-1 (185 cm) tall. The Jack Russell Terrier was originally bred not to kill the fox, but to cause it to run from any hiding place so that the fox. Nonetheless he has. The gorgeous Cockapoo is a mixed-breed dog. Staffordshire Bull Terrier. Jack Russells are good dogs for people who are happy to devote at least an hour a day to substantial, play-filled walks. The Jack Chi is a mixed breed dog — a cross between the Jack Russell Terrier and Chihuahua dog breeds. The Jack Russell Terrier Club of America standard calls for dogs to be from 10 to 15 inches in height. The Jack Russell Terrier is okay for new owners, but may not be as easy as the Chihuahua. The Jack Russell Terrier is a small, curious dog originally bred to hunt foxes. These charming dogs are known for their bold and feisty temperament, and they are quite entertaining to be around. Developed in England in the 1800s, the Jack Russell Terrier is a working terrier used to hunt foxes. Featuring those rounded, long ears as a Cavalier and a long, oval body like a Jack Russell’s, the Cavajack is a fascinating Jack Russell Terrier mix. In the 1930s, Jack Russells became quite popular in America, and several breed clubs formed, including The Jack Russell Terrier Club of America and The Jack Russell. Once used to help hunters by driving foxes from their lairs, the Jack Russell Terrier is a joyful little dog with plenty of spunk and personality. Jack Russell Terriers mixed with a Pit Bull Terrier is known as the Jack Pit. Jack Russells can be playful, affectionate, highly energetic, and clownish. Below is an estimate of the height and weight of the Pug crossed with Jack Russell as. Due to the gene pools of their parents, you can. Así mismo, es inteligente, muy fiel y valiente a pesar de su reducido tamaño. There are some dog owners who are exhausted by him and would prefer a more quieter dog breed as their companion. So if you’re considering taking one home, firstly make sure this lively breed is suited to your lifestyle. In another way, the two breeds are roughly comparable in size. A study [2] conducted on aggression in 23 breeds placed Jack Russells in the 17th place. Jack Tzu (Jack Russell Terrier X Shih Tzu) Friendly and cheerful, the Jack Tzu is a sweet-natured dog that does not hesitate to greet strangers. Jack Russell Terrier. The Jack Russell Terrier dog (JRT) is an intense and athletic little dog that has won people’s hearts everywhere with its speed, intelligence, determination, and bold attitude. 7/10. They usually weigh between 7 and 12kg. Long-coated Jack Russell Terriers are slightly longer than they are tall at 18 to 22 inches. Both Jack Russells and Beagles are small in stature, but Jack Russells are smaller and more agile. All applicants are thoroughly screened and must meet certain qualifications before being referred to adopt a Jack Russell Terrier. Read more. 14. Jack Russell Terrier ears are small and V-shaped and tend to fold over at the midpoint. . A sporty breed with a curious personality, the Jack Russell terrier, won’t hesitate to trot right into your heart. The smooth coat is short, coarse and smooth with. This terrier soon became a favorite for ratting and vermin control. Its height at the shoulders commonly ranges from 12 to 18 inches. Another fine hybrid pup with terrier lineage has a toy fox terrier for a parent. Energy Levels. The Border Jack is not a purebred dog. Origin. Jack Russell Terriers are a popular dog breed these days - but how much do you really know about them? Check out these top 5 fun facts about Jack Russells. If your Border Jack seems to be struggling. By 1935, the dog had also become popular in the United States. Although the country of development is seen as Australia, the breed has its roots in the working Terriers of the British Isles, many of which were early exports with ex-pats who emigrated to Australia and which proved their worth keeping down vermin in the new homesteads. Both dogs are still Jack Russell Terriers. Life Expectancy: 13 – 16 years. Choosing the Best Jack Russell Terrier Type. A Jack Russell can stay home alone, but like every dog, this should only be for a few hours. The Jack Russell Terrier is strong and sinewy with long flat muscles in hard condition. The Jack Russell Terrier is a small Breed of Terrier, that was originally bred for Fox hunting. Jug Dog Breed. As well as any other mix involving Pit Bulls and the Jack Russell Terrier, the Bully Jack Terrier is a small to medium-sized dog. by Dennis Stapleton. In the United States, Jack Russell Terriers became especially popular, and several breed clubs sprung up as a result. Needs a lot of interaction. Jack Russell. Jack Russell puppies should receive around 800 to 900 calories to take account of their growth and energy needs. The breed became known in the U. Eyes. They can excel at agility and advanced obedience training,. Jack Russell Terrier has a long history with many stories. 2. Bred to go to ground to hunt vermin, the Russell Terrier is a small, robust dog with a confident personality. It was originally developed to hunt foxes during the Victorian era, so it comes as no surprise that this purebred has a strong desire to work and prefers having a job to do. Calculate dog years to human years by breed here. Parson Russell Terrier is taller and is 13 to 14 inches (33 - 35. Energetic, curious and playful, he is a good match for active families. The smoother coats require minimal maintenance, while a little more (not a lot) grooming is necessary for the broken and rough coats. House Of Jacks. That’s the quick and easy. This dog is also devoted and affectionate. Appearance. Jack Russell Australian Shepherd Mix Size and Weight. Pedersen and staff, has developed a panel of short tandem repeat (STR) markers that will determine genetic diversity across the genome and in the Dog Leukocyte Antigen (DLA) class I and II regions. The Breed was formally recognised by The Kennel Club in 1990 as the Parson Jack Russell Terrier. If you are thinking about getting a Jack Russell Terrier, then this is the guide for you. Jack Russells are white with black or tan markings. Learn more. The Parson Russell terrier is a small dog, measuring 13–14 inches tall and weighing between 13–17 pounds. Yorkie Russell Breed Appearance. 8 Health Issues That Frequently Impact Jack Russell Terriers. The Jack Tzu, as a Jack Russell Terrier-Shih Tzu mix, is a small-sized, active crossbreed that often has the body structure of a Jack Russell and the scruffy coat of a Shih Tzu. 5 to 8 kg. The Parson Russell Terrier could be described as having a square body, while Jack Russells are more rectangular in shape. In essence, they’ll typically have the stubbornness of a Dachshund combined with the high levels of energy commonly found among Jack Russell Terriers. Weight: 15 – 18 pounds (6. See moreThe Jack Russell terrier is a true working terrier. Jack Russell Terriers can trace their roots to the small, white Fox Terriers and English Terriers that existed half a millennia ago. This breed combines the energy and intelligence of a Jack Russell with the calm, protective instincts of a Shar Pei. 5 cups of food daily depending on their age and activity levels. They are usually black, brown, or tan with considerable areas of white across much of their fur, especially their chest and legs. They love to have a job to do and require a lot of physical activity. Fun Facts. 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. Quick Facts. There are some diseases that are typical for this breed, but purchasing your dog from a responsible breeder can reduce the associated risk. If you are thinking of buying a Jack Russell Terrier puppy, make sure the parents of your puppy have had the relevant health screening to reduce the chances of your puppy being affected by certain. 5 kg) Ellie the Jack Chi at 5 years old— "Ellie's a 5-year old Jack Chi, and we're pretty sure she's a cat trapped in a dog's body given the contrast between her usually ultra-mellow demeanor and her attitude and sass when she gets feisty. This is a first generation or F1 mix, which means that the puppies are usually a product of two purebred parents. The ears are long and hang down, and the tail is medium in size and. The coat is mostly smooth and short, but the coat can also be. Join our club . The Jack Russell Terrier is a popular breed that was developed by a man named Parson Russell who became extremely popular with hunters as they could use the dog for hunting foxes. Approval is based upon the understanding and acceptance of the. Parson Russell Terrier compared to Jack Russell coat. He is a confident dog and faces any new situation head on. The Jack Russell is a very special breed; it has been kept sound, functional, intelligent and relatively unchanged because of responsible people who have cared about its heritage. All puppies have special needs, and Jack Russells are no exception, so. Shedding. Introducing a new dog to your Jack Russell can be fun. The keen, intelligent Russell Terrier thrives on being outdoors and needs plenty. For the most part, Jack Russell Terriers tend to have quality health. It was named for the Rev. Email : Display Email. The breed was eventually brought to the United States sometime in the 1930s. Height. Some Jack Russells are even called Parson Russells. It is a cross between the Border Collie and the Jack Russell Terrier. Both males and females are around the same size and typically weigh between 9 and 15 pounds and are between 10 and 12 inches tall. by the 1930s and the Jack Russell Terrier Association of America wanted recognition by the American Kennel Club,. Check out these top 5 fun facts about Jack Russells. Temperament. Jack Russell Terriers were bred specifically for hunting since the mid 19th century. Their skulls are quite flat and moderately wide being narrower around a dog's eyes before tapering to the muzzle. Its friendly and intelligent nature makes it a great companion or outdoor dog for singles, couples, or families. 4 (12 votes) First found in the mid-1800s, the Jack Russell was named after Reverend John Russell, who used the breed for small game hunting. Caring for your Jack Russell terrier. The Jack Russell Terrier Club of America claims that “real” Jack Russells can vary in height ranging from 25 to 37. Shorty Jacks are 10 to 12 inches tall and measure more in length than in height. The Jack Russell Terrier was good at digging into foxes. Although small, the Jack Russell Terrier isn’t a short dog but depends on perfect.