Should you get a Jack Russell Terrier?
Despite their portable size, Jack Russells are fearless and confident, which can sometimes lead to them being overly assertive or aggressive towards other dogs. They are small dogs with high energy levels who require both regular physical and mental stimulation.
Jack Russell Terrier Origin & History
The Jack Russell Terrier was aptly named after its founder, an English clergyman by the name of John Russell (1795-1883). Reverend Russell was an avid hunter who used a white and brown terrier as his loyal companion during his hunting expeditions. This particular breed of terrier, now known as the Parson Russell Terrier, possessed remarkable hunting skills and an unwavering determination. Reverend Russell recognized the unique qualities of this terrier and devoted his time to breeding and refining the breed.
Do Jack Russell Terrier’s Shed?
The Jack Russell Terrier is known for its distinctive white coat with either brown or black markings, and it can have a smooth, broken, or rough coat. While the appearance of the coat may vary, one thing that many JRT owners can agree on is that they are shedders! According to some JRT owners, the smooth-coated Jack Russells tend to shed more than those with longer coats. So, if you’re considering bringing a Jack Russell Terrier into your home, make sure you have the vacuum ready to keep up with their shedding!
Jack Russell Terrier Traditional Uses
Jack Russell Terriers were bred as hunting dogs, specifically baying terriers. Their job was to hunt down foxes (or other small prey) and trap them-barking like mad until the hunters arrived.
What made them so good at their jobs?
✔ Compact Size – Small enough to bolt into foxholes but sturdy enough to work long hours.
✔ High Prey Drive – Relentless in pursuing quarry (foxes, badgers, rats).
✔ Loud, Persistent Bark – Used to alert hunters while holding prey at bay.
✔ Fearless & Tenacious – Would confront much larger animals underground.
✔ Stamina & Agility – Could run for miles and navigate rough terrain.
Jack Russel Terrier’s Closest DNA Relatives
In Landmark Research on Modern Dog Breed development, the JRT has been shown to share the most DNA with an ancestor of the following breeds:
Wire Fox Terrier
Parson Russell Terrier
Border Terrier
Jack Russell Terrier’s Can JUMP!
Jack Russell Terriers (JRTs) are known for their boundless energy and impressive vertical leap. These little dogs have a remarkable ability to jump more than 5 times their own height. That means even a 12-inch JRT can soar over five feet high! While not officially measured in competitions, many JRT owners report their dogs clearing fences, countertops, and even baby gates with ease.
Jack Russell Terrier Size and Coat Colors
The Jack Russell Terrier can reach up to 14 inches in height and 17 pounds in weight. Their coat types and colors are:
Coat Types:
Smooth (short, dense, lies flat)
Broken (intermediate, with some wiry longer hair)
Rough (longer, coarse, scruffy—though some registries classify this separately).
Acceptable Colors:
Predominantly white (must be 51%+ white, per most standards).
Markings: Black, tan, or both (“tri-color” = white + black + tan).
Grizzle (a subtle mix of dark and light hairs, giving a “peppered” look).
Disqualifications (in show rings):
Brindle stripes (seen in some mixed terriers but not purebred JRTs).
Solid white (no markings at all—rare but not preferred).
Excessive ticking (small flecks of color on white areas).
Jack Russel Terriers Hunting Snakes!
Jack Russel Terriers are used as snake detector dogs. Using 17 JRT’s with a combination of traps, the USDA removed 8300 brown tree snakes in Guam. JRT’s are one of the only breeds with the intelligence and agility NOT to get bitten by the snakes.
Growing Up Jack Russell Terrier
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What is their REAL name?
April 1st, 2003 the official name of the American Kennel Club-recognized Jack Russell Terrier was changed to the Parson Russell Terrier. The AKC does recognize the name Jack Russell Terrier. In 2016, the AKC began allowing “Russell Terriers” (a separate category for shorter-legged JRTs, under 12″). The FCI recognizes them as two separate breeds – Jack Russell and Parson Russell Terriers.
How Fast Can a Jack Russell Terrier Run?
The AKC Conducts Dog Racing Trials each December in Orlando, FL. called the Fast CAT Invitational. This is a 100 yard race where dogs run individually chasing a lure. The average speed of JRT’s is 22.22 MPH. The fastest recorded speed was by a JRT named Furious Rugrat at 27.10 mph!
Jack Russell Terrier Temperament & Personality
The CBARQ Dog Temperament Research study, conducted at the University of Pennsylvania, is a giant study of over 300 dog breeds and 60,000 individual dogs. In this study, the Jack Russell Terrier ranked 7 out of 124 dog breeds in prey drive. This means they WILL almost always chase other small animals such as cats, squirrels, rabbits etc.
Are Jack Russell Terrier’s Hyper?
In this Same Research the Jack Russell Terrier ranks 6 out of 124 breeds in excitability. Essentially, if a stimulating event such as getting ready for a walk or car ride, visitors arriving, the doorbell ringing etc. a JRT will generally display a hyper reaction and may take a while to settle back down. They are a high energy and excitable breed that requires a lot of exercise!
JRT Humor!
Jack Russell Terrier Intelligence
In the Landmark Book entitled, “The Intelligence of Dogs”, professor Stanley Coren researched and documented the intelligence of over 130 different dog breeds. In his book, the JRT ranks 46 out of 138 breeds in working/obedience intelligence. Essentially this means they will learn new commands in 25 to 40 repetitions and obey first commands more than 50% of the time. This puts them in the “average working and obedience intelligence” category. In contrast, the most intelligent breeds will learn the same command in 5 repetitions or less and the least intelligent, 80-100 repetitions.
Jack Russell Terrier Health & Lifespan
JRT’s are Generally a Healthy breed, with an average lifespan of 13-15 years. A Jack Russell Terrier named Willie lived to 20 years old! Like all dogs breeds, there are certain health conditions that effect them:
Hip and Elbow Dysplasia
Legg-Calve-Perthes Disease
Portosystemic Shunt Liver Disorder
JRT’s tend to be STUBBORN.
Jack Russell Terriers (JRTs) are legendary for their stubbornness, often ranking as the 4th most stubborn dog breed, trailing behind Beagles, Bulldogs, and Dachshunds. Their fierce independence and strong-willed nature stem from their working terrier heritage—after all, they were bred to make split-second decisions while hunting foxes underground!
Check Your Jack Russell Terrier Facts and Take a Fun JRT Quiz!
Quick Facts About Jack Russell Terriers Infographic
Facts About Jack Russell Terriers – Final Thoughts
Jack Russell Terriers have a unique combination of traits and characteristics. Their small size and portable nature make them great options for families looking for a compact and energetic pet. It’s important for dog owners to provide consistent training and positive reinforcement methods to channel their independent spirit and high prey drive in a positive direction. Additionally, these dogs thrive with plenty of exercise and mental stimulation, making them ideal candidates for dog sports and activities that challenge their minds and bodies. While they may require more effort than some larger dogs, the rewards of owning a Jack Russell Terrier are well worth it. With the right approach, these little dynamos can become great family pets.
