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Bo-Jack Breed Guide: Your Companion to the Boston Terrier Jack Russell Mix - PawSafe

Bo-Jack Breed Guide: Your Companion to the Boston Terrier Jack Russell Mix

Photo of Tamsin De La Harpe

Written by Tamsin De La Harpe

Bo Jack breed

If you’re thinking about adding a pup to your life and love the idea of a perky pet with loads of personality, you might want to consider the Bo-Jack. This mixed breed combines the best traits of the Boston Terrier and the Jack Russell Terrier, resulting in a dog that’s both energetic and affectionate. The Bo-Jack isn’t a common breed you’d find on every street corner, but it’s gaining popularity among dog lovers for good reason.

The Bo-Jack’s parents, the Boston Terrier and Jack Russell Terrier, are both known for their distinctive looks and spirited nature. The Boston Terrier, with its tuxedo-like coat and friendly approach, brings a gentle warmth to this mix. On the other hand, the Jack Russell Terrier, a fireball of energy and intelligence, contributes a fearless and lively spirit. Together, these breeds create a dog that is smart, full of life, and eager to be part of your daily activities.

Since you’re interested in a mix like the Bo-Jack, you should know they usually inherit physical and temperamental traits from both parent breeds. They’re typically small to medium-sized dogs, making them a suitable choice for various living situations, from city apartments to homes with backyards. However, just like any pet, they’ll need your time, love, and attention, along with regular exercise to keep their energetic bodies and minds in good shape.

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They are well-suited for moderately active families and adapt well to various living situations, provided they get enough mental and physical exercise.

Other adorable Boston Terrier Mixes include the Buggs and the Boston Pit

Bo-Jack Personality Traits?

When you bring a Bo-Jack into your life, you’re inviting a bundle of joy and vibrant energy. Imagine a dog with a playful spirit who loves to engage in fun activities. That’s your Bo-Jack to a T! These dogs are known for their energetic nature, eager to play fetch or go on a brisk walk. However, when playtime is over, they can be quite calm and content by your side.

Your Bo-Jack is not only fun-loving but also intelligent. Training should be a breeze, as they pick up new commands with enthusiasm. But remember, positive reinforcement works best for them. Their smartness is one of the things you’ll love most.

Overview of BoJack Terrier Traits

  • Loving –  Always ready for cuddle time.
  • Friendly – A buddy to all; they’ll greet your friends with a wagging tail.
  • Affectionate – Don’t be surprised by their sweet nuzzles and keenness for lap time.
  • Gentle –  They know when to soften their play for the right moments.
  • Loyal – Your Bo-Jack will stick by you through thick and thin.
  • Energetic – You can expect these pups to be very active and busy!
  • Tenacious – when one of these terrier mixes sets their mind to something, they’re going to do it!
  • Alert & Vocal – They are likely to bark and make great watchdogs

Sometimes, their loyalty and love translate into a protective nature. They really care about their family. Because they sometimes have a hyper side, provide them with enough play to keep them happy. It’s all about balancing their enthusiasm with the right amount of daily activity and love.

Nice and simple, your life with a Bo-Jack will be one full of affection and action. They are not just pets, but members of your family who will offer endless joy and companionship.

Exercise Needs for Bo-Jacks?

Red and white Jack Russell Terrier Boston Terrier Puppy running on grass for exercise active Bo-Jack dog

Bo-Jacks are a mix between a Boston Terrier and a Jack Russell Terrier. You’ll find that your Bo-Jack is a bundle of energy and needs daily exercise to stay happy and healthy. They’re known for their high energy levels and will enjoy being your active companion.

To keep up with their energy, you should plan for several playful activities throughout the day. Remember, these dogs love playing fetch!

Here’s a quick guide to manage their exercise routine:


  • A brisk 20-minute walk or a short jog to start the day.
  • A game of fetch to get those muscles moving.


  • Playtime in a fenced yard, if possible, where they can run freely.
  • Interactive toys can help keep them occupied and mentally stimulated.


  • Another walk or a more relaxed play session to wind down.

Due to their hunter instincts and prey drive, it’s important to keep Bo-Jacks on a leash or in a secure area when outside. They might take off after squirrels or other small animals.

Remember, because of their intelligent and playful nature, they’ll easily get bored with the same old routine. Mix things up with new toys or different walking paths. Also, since they’re quite social creatures, consider play dates with other dogs to burn off that extra energy.

Always keep an eye on your Bo-Jack during exercise. If they start to lag behind or pant excessively, it might mean they’re getting too much exercise. Just like you, they need to build up their stamina gradually.

Typical Bo-Jack Size & Appearance?

Red and white Bo-Jack dog on grass

When you picture a Bo-Jack, imagine a small yet sturdy dog. This mix combines the best of the Boston Terrier and Jack Russell Terrier looks.

Size and Weight

  • Height – Expect your Bo-Jack to stand about 15-17 inches (38-43 cm) tall.
  • Weight – They usually weigh around 15-25 pounds (7-11 kg).

Coat and Colors

  • Coat – Bo-Jacks have a coat that’s short to the touch.
  • Coloring – Your pup could sport a variety of colors, commonly including black, white, and shades of brown. They may also be brindle and white.

Body Type

  • Build – You’ll notice your Bo-Jack has a compact and muscular frame, though they lean towards a lighter, more athletic build rather than being bulky.

Other Features

  • Head – Their heads are square-shaped, taking after the Boston Terrier.
  • Eyes – Big and expressive eyes are typical.
  • Ears – They can either inherit the pointed ears of a Jack Russell or the rounded ones from the Boston Terrier.

Keep in mind that each Bo-Jack can vary a little, so yours might have its unique twist on these common traits. What you can always look forward to is a dog with a lively character and a smart appearance!

Are Bo-Jacks Child-Friendly?

When you’re considering a Bo-Jack as a family pet, you’re probably wondering if they’re good with kids. Boston Terrier and Jack Russell Terrier mixes, also known as Bo-Jacks, can indeed be a great companion for your children. But there are a few things you should know.

Firstly, Bo-Jacks often inherit the playful and friendly nature of the Boston Terrier. They’re usually energetic and love to play, which can be a perfect match for active kids. However, the Jack Russell side of them can bring in a strong-willed tendency, so early socialization and training are crucial.

  • Socialization: Introduce your Bo-Jack to a variety of people and settings early on to help them become well-behaved around children.
  • Training: Consistent training will ensure your dog understands the rules of interacting with young family members.

Now, you also want to think about ages. While Bo-Jacks can be great with children, they sometimes don’t realize their own strength or get overly excited, which means they can accidentally knock over smaller kids. You’ll want to supervise interactions with younger children.

Grooming Needs of Bo-Jacks

Bo-Jacks, your friendly Boston Terrier Jack Russell Terrier mix, have some specific grooming needs that you’ll want to keep up with to make sure your pup stays happy and healthy.

Coat Care

Your Bo-Jack’s coat is short, which does mean a bit less grooming time for you. But, they do shed, so make sure you have a good brush. Brushing a couple of times a week should suffice to keep their coat shiny and to reduce the amount of hair on your couch.


Expect some shedding, especially when the seasons change. Regular brushing helps manage this. If shedding seems excessive, check in with your vet to make sure there’s not a health issue.


Your Bo-Jack won’t need frequent baths, usually just when they start to get a bit smelly or dirty from their adventures. When you do bathe them, use a dog-specific shampoo to protect their skin’s natural oils.


Bo-Jacks are not considered hypoallergenic. If you have allergies, this may not be the ideal breed for you.


To summarize, your Bo-Jack’s grooming routine should include:

  • Brushing Twice a week
  • Bathing – As needed
  • Nail Trimming Monthly
  • Ear Cleaning Check and clean weekly

Remember, keeping up with these tasks means your pup stays comfortable and healthy. Plus, it’s a great time to bond with your Bo-Jack!

Common Health Issues in Bo-Jacks

Your Bo-Jack might be a bundle of energy, but just like any dog, they can have some health issues from either the Jack Russell or Boston Terrier parent. Knowing what might come up can help you keep your buddy healthy.


You’re looking at about 12-15 years with your Bo-Jack  Terrier pal. Regular vet check-ups and a good diet can help reach those golden years.

Patellar Luxation

This fancy term means their kneecap moves out of place. It can be from a bit ouchy to really painful. Keep an eye on how they move, especially after playtime.


If you notice their eyes getting cloudy, it could be cataracts. It’s like looking through a foggy window and can lead to blindness — if you see signs, a vet trip is due.


Yep, your Bo-Jack might have trouble hearing. Watch for signs like not responding to their name. It’s important to know this to keep them safe, especially near traffic.

Cherry Eye 

This one is hard to miss — it looks like a red bump in the corner of their eye. Although it’s not usually serious, it can be uncomfortable.

Brachycephalic Syndrome

With their short snouts, breathing can be tough for your Bo-Jack (if they inherit the Boston’s smooshed-in face and not the longer snout of the Jack Russell parent). Snoring and heavy breathing while exercising are signs.

Respiratory Problems

Anything like coughing or wheezing, and it’s time for a vet visit. Good exercise and weight control are part of the management.

Skin Infections and Allergies

Bo-Jacks might have itchy or irritated skin. Check for redness or hair loss and get those allergies or infections treated to avoid scratching.

Don’t be scared — most Bo-Jacks are pretty healthy! But keep these in your mind, and you’ll do fine helping your pup stay on track.

Trainability of Bo-Jacks Terriers?

When considering a Bo-Jack for your family, you should know that their trainability is rooted in their mixed heritage — combining the intelligence of Boston Terriers and the vibrant energy of Jack Russell Terriers.

Intelligence and Training

The Bo-Jack breed is recognized for being smart and intelligent, making them rather trainable. With their eager-to-please attitude, they often respond well to positive reinforcement. To keep their sharp minds engaged, consider incorporating a variety of training exercises and games that challenge them both mentally and physically.

Training Tips

  • Use positive reinforcement techniques;
  • Keep sessions short and engaging; and
  • Introduce new challenges regularly.


Socialization is vital for your Bo-Jack, especially from a young age, as it shapes their ability to interact with other dogs, kids, and families. They are typically friendly and affectionate, showing lots of affection to their owners while playing well with others.

Socialization Activities

  • Regular walks in the park (after your puppy has had their vaccines);
  • Puppy playdates;
  • Puppy Socialization classes; and
  • Family gathering attendance.

Behavioral Challenges

Despite their intelligence, Bo-Jacks can have a stubborn streak which might present some training challenges. They can exhibit behaviors such as barking or separation anxiety if they don’t get enough attention or mental stimulation.

  • Managing Challenges
    • Be consistent and patient with training;
    • Address unwanted behaviors immediately; and
    • Provide plenty of energy-burning activities.

Activities and Play

Bo-Jacks are high-energy dogs that thrive on running, fetch, and other playful activities. Their prey drive is often evident, so games that simulate hunting can provide excellent physical and mental exercise. They crave both physical activity and affection, so interactive play is a perfect way to bond with your Bo-Jack.

  • Recommended Activities:
    • Daily walks or runs;
    • Fetch and frisbee games; and
    • Agility training (for both physical exercise and obedience work).

Best Diet for Bo-Jacks?

When you’re caring for a Bo-Jack, the goal is a balanced diet that keeps your pup lean and muscular. Since Bo-Jacks are often active dogs, they need food that fuels their energy while maintaining their weight.

What to Feed

Choose a high-quality dog food that lists real meat as the first ingredient. Look for options that include:

  • Proteins Essential for muscle health.
  • Whole grains For long-lasting energy.
  • Veggies and fruits Provide vitamins and fiber.

Portion Sizes

Bo-Jacks vary in size, but they usually require a moderate amount of food. Read the feeding guide on your dog food label. It’s a handy starting point.

Feeding Frequency

Divide your Bo-Jack’s daily food into two meals:

  • Morning
  • Evening

This can help prevent bloating and manage hunger throughout the day.

Treats and Extras

Treats should only be 5% of their diet. Stick to healthy options like:

  • Carrots
  • Apples (no seeds)
  • Lean meats

Remember to adjust meal size if you give your dog treats to avoid overfeeding.

Keep an Eye on Weight

Weight can creep up on your Bo-Jack. You should be able to feel their ribs but not see them. If you’re worried, your vet can guide you on the best diet for your pup.

Ideal Living Environment for Bo-Jacks?

When considering a Bo-Jack, it’s crucial to provide an environment that caters to their energetic and sociable nature. They thrive in settings that meet their physical and emotional needs.

Home Requirements

Your Bo-Jack requires a sufficient amount of space to move around due to their active nature. Even if you’re living in an apartment, it’s important to offer ample room for play and exercise, as these dogs typically range in size from small to medium. A fenced yard is ideal because Bo-Jacks have a high energy level and enjoy running and exploring securely.

Family Dynamics

Bo-Jacks are notably affectionate and fit well with families. They often get along with kids, but supervision is key to ensure safe interactions, especially if the children are very young. Since Bo-Jacks may suffer from separation anxiety, it’s best for someone who can offer constant attention and avoid leaving them alone for long periods. They enjoy being part of a social environment and typically welcome the company of other dogs.


Bo-Jacks are quite adaptable and can adjust to various living situations, including apartment living, as long as their physical and emotional needs are met. Remember to maintain their socialization routines to minimize anxiety and ensure your Bo-Jack is comfortable in different settings. Regular outings and socializing activities can help make your Bo-Jack a well-rounded companion.

What is the Average Cost to Purchase a Bo-Jack Puppy from a Breeder?

Boston Terrier Jack Russell Terrier puppy sleeping in pink tub

When you’re considering adding a Bo-Jack puppy to your family, you’ll want to know how much to budget for this mixed breed dog. A Bo-Jack is a cross between a Boston Terrier and a Jack Russell Terrier.

Price Range

The cost of a Bo-Jack puppy can vary widely, usually ranging from $300 to $800. The price can be influenced by several factors, including the breeder’s reputation, the location, and the puppy’s lineage.

Breeder Reputation

Breeding mixed breed dogs like the Boston and Jack Russell cross is very controversial. So, if you get this dog from a breeder, beware of backyard breeders and puppy mills that may be cashing in on “designer dog” trents. This could lead to temperament and health issues in your puppy.  

Look out for breeders who are transparent about their breeding practices and offer health clearances for the puppy’s parents.

  • Health Testing: If the breeder has invested in health testing and ensuring the puppies’ well-being, this could raise the cost.
  • Location: The area you live in can also affect the price. In places where Bo-Jacks are more popular, they might cost more.

Remember, while cost is important, it’s also critical to consider the lifelong expenses that come with owning a pet. This includes recurring costs such as food, veterinary care, and grooming. Your new pup will rely on you for their care and happiness, so make sure you’re ready for the commitment.

When looking for a Bo-Jack puppy, it’s good to visit the breeder, meet the puppy’s parents, and see the conditions they’re raised in. A healthy, happy puppy is worth the investment, and avoiding low-cost, unethical breeders will save you and your puppy from potential heartache and vet bills in the future.

Finding a Bo-Jack

A Bo-Jack puppy for sale Boston Terrier Jack Russell Terrier Mix breed puppy held in owner's hand

When looking for a Bo-Jack, a mix between a Boston Terrier and a Jack Russell Terrier, you’ll want to consider breeders, adoption options, and the costs associated with this energetic breed.

Choosing a Breeder

When you’re picking a breeder for your Bo-Jack puppy, it’s important to find someone who prioritizes the health and temperament of their dogs. A good breeder will provide health clearances for the puppies’ parents and be transparent about the breed’s characteristics. Look for breeders who raise pups in a home environment and encourage visits.

Adoption and Rescue

Adoption or rescue can be a fulfilling path to finding your Bo-Jack. Rescuing a dog gives them a second chance at happiness. Contact local shelters or breed-specific rescues that may have Bo-Jacks or similar mixes. You’ll pay an adoption fee, which is often lower than buying from a breeder. Plus, many rescue dogs are already vaccinated and spayed/neutered.

Cost Considerations

Cost is a big part of getting any dog, and Bo-Jacks are no exception. The initial expenses can include the purchase price, which varies if you go through a breeder or adopt. Then there’s maintenance: think feeding, grooming, and health care. Remember, owning a dog is a long-term commitment, and budgeting for your pet is crucial to provide them with a happy and healthy life.

Frequently Asked Questions (FAQs)

When considering adding a Bo-Jack to your family, you may have some questions. Below are answers to common inquiries about the delightful Boston Terrier and Jack Russell mix.

How long is the typical lifespan for a Boston Terrier and Jack Russell mix?

Boston Terrier and Jack Russell mixes typically enjoy a lifespan of around 11 to 16 years. Proper care can contribute positively to their longevity.

What traits make a Jack Russell Terrier mix a good companion?

Your Bo-Jack will exhibit high energy and intelligence, traits inherited from both parent breeds. These dogs are loyal and affectionate, making them engaging and devoted companions.

How large can I expect my Bo-Jack dog to get when it’s fully grown?

A fully grown Bo-Jack can weigh between 12 to 25 pounds and stand around 15 to 17 inches tall at the shoulder. Their size is a middle-ground reflection of both their Boston Terrier and Jack Russell Terrier lineage.

Can you tell me what parent breeds are combined to create a Bo-Jack dog?

The Bo-Jack dog is a cross between the spirited Jack Russell Terrier and the friendly Boston Terrier. This mix brings together the best traits of both parent breeds.

What are the main health considerations to be aware of for a Boston Terrier and Jack Russell mix?

Bo-Jacks may inherit health issues common to Boston Terriers and Jack Russell Terriers, such as patellar luxation and heart problems. Regular check-ups and attention to diet and exercise can help maintain their health.

Final Thoughts

When you’re considering a Bo-Jack as your next four-legged companion, remember their vibrant energy and need for engagement. It’s crucial for you to provide them with regular exercise and mental stimulation. This isn’t just a pet; it’s a commitment to an active lifestyle.

Before you decide, consider if your home environment matches the needs of a Bo-Jack. They’ll do best with an owner who understands the importance of companionship and activity. Your life will be filled with laughter and love, but the responsibility is yours to ensure a happy, healthy dog. Embrace the journey, it’s as rewarding as it is demanding!

Meet Your Experts

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Tamsin De La Harpe


Tamsin de la Harpe has nearly two decades of experience with dogs in rescue, training, and behavior modification with fearful and aggressive dogs. She has worked closely with veterinarians and various kennels, building up extensive medical knowledge and an understanding of canine health and physiology. She also spent two years in the animal sciences as a canine nutrition researcher, focusing on longevity and holistic healthcare for our four-legged companions. Tamsin currently keeps a busy homestead with an assortment of rescue dogs and three Bullmastiffs.

Tamsin de la Harpe has nearly two decades of experience with dogs in rescue, training, and behavior modification with fearful and aggressive dogs. She has worked closely with veterinarians and various kennels, building up extensive medical knowledge and an understanding of canine health and physiology. She also spent two years in the animal sciences as a canine nutrition researcher, focusing on longevity and holistic healthcare for our four-legged companions. Tamsin currently keeps a busy homestead with an assortment of rescue dogs and three Bullmastiffs.