English Bulldog and Boston Terrier Mix: Complete Breed Profile
Everything about the English Bulldog and Boston Terrier mix: size, temperament, health risks, grooming, cost.
Cross an English Bulldog's laid-back charm with a Boston Terrier's spirited personality and you get one of the more interesting designer mixes in the small-to-medium dog world. Sometimes called a "Bullston" or "Boston Bulldog," the English Bulldog and Boston Terrier mix combines two brachycephalic (flat-faced) breeds that share ancestry but differ significantly in build, energy, and health profiles.
This guide breaks down what prospective owners actually need to know — from the wide variability in size and temperament to the real health picture that goes well beyond the "hybrid vigor" marketing hype. Whether you're considering a puppy from a breeder or evaluating a rescue dog, understanding both parent breeds is the key to predicting what you'll live with for the next 10 to 14 years.
Parent Breed Breakdown: English Bulldog vs. Boston Terrier
Understanding the parent breeds is essential because every mixed-breed puppy inherits a random combination of traits from each side. Here's how these two breeds compare on the characteristics that matter most to daily life:
| Trait | English Bulldog | Boston Terrier |
|---|---|---|
| Weight | 40–50 lb (18–23 kg) | 12–25 lb (5–11 kg) |
| Height | 14–15 in (36–38 cm) | 15–17 in (38–43 cm) |
| Lifespan | 8–10 years | 11–13 years |
| Energy Level | Low; short walks, lots of naps | Moderate; playful bursts, enjoys games |
| Coat | Short, smooth, fine; moderate shedder | Short, smooth, fine; light shedder |
| Temperament | Calm, stubborn, loyal, gentle | Friendly, alert, intelligent, occasionally stubborn |
| Trainability | Moderate; requires patience | Good; responds to positive reinforcement |
| AKC Group | Non-Sporting | Non-Sporting |
Both breeds share brachycephalic skull structure (short muzzles, flat faces), which means breathing-related health concerns are a near certainty in this cross. They also share a generally affectionate, people-oriented disposition — neither breed was developed for independent fieldwork, so they bond closely with their families.
The biggest divergence is in body mass and energy. The English Bulldog is a dense, muscular dog that often weighs twice what a Boston Terrier does, while the Boston is lighter on its feet and more inclined to sustained play. This weight gap is the single largest source of unpredictability in the mix.
Understanding Generations: F1, F1B, and Beyond
Generation Explainer
- F1 (First Generation): One purebred English Bulldog parent × one purebred Boston Terrier parent. Maximum genetic diversity between the two breeds. Most common for this cross.
- F1B (First Generation Backcross): An F1 Bullston × one of the parent breeds (usually the Boston Terrier, to produce smaller puppies). More predictable traits leaning toward the backcross parent.
- F2 (Second Generation): Two F1 Bullstons bred together. Trait variability increases significantly — puppies may favor either grandparent breed.
- Multigen (F3+): Multiple generations of Bullston × Bullston breeding. Rare for this particular cross; most breeders stick with F1 pairings.
For the English Bulldog and Boston Terrier mix, F1 is by far the most common generation you'll encounter. This cross isn't as heavily commercialized as Labradoodles or Goldendoodles, so established multigen breeding programs are uncommon. If a breeder offers F1B puppies, ask specifically which parent breed was used for the backcross — this dramatically affects expected adult size.
Size Range: How Big Will This Mix Get?
This is where the English Bulldog and Boston Terrier mix shows its widest variability. Because the parent breeds differ by roughly 20–25 lb (9–11 kg) in adult weight, mixed-breed puppies can land anywhere along that spectrum.
| Measurement | Low End | High End | Most Common |
|---|---|---|---|
| Adult Weight | 18 lb (8 kg) | 45 lb (20 kg) | 25–35 lb (11–16 kg) |
| Adult Height (at shoulder) | 13 in (33 cm) | 17 in (43 cm) | 14–16 in (36–41 cm) |
| Body Build | Lean, Boston-like | Stocky, Bulldog-like | Compact, moderately muscular |
Most F1 puppies tend toward the middle of the range — roughly 25 to 35 lb (11–16 kg) — but there's no reliable way to predict an individual puppy's adult size at 8 weeks. A useful heuristic: if the puppy has the Bulldog's broad chest and heavy bone structure at 12 weeks, expect the higher end. If the frame is narrow and legs are proportionally longer, the Boston Terrier side is likely dominant.
Ask the breeder for the exact weights of both parents. If the English Bulldog parent is a smaller female (around 40 lb / 18 kg) and the Boston Terrier parent is a larger male (22–25 lb / 10–11 kg), the spread narrows considerably.
Temperament: What to Expect (and What Might Surprise You)
Temperament in mixed breeds isn't a simple average of the parents. Individual puppies inherit different trait combinations, and early socialization during the critical 3-to-14-week window shapes behavior as much as genetics do.
Best-Case Scenario
You get a dog that combines the Bulldog's easygoing nature with the Boston Terrier's alertness and playfulness. The result: a friendly companion who enjoys short play sessions, greets visitors warmly, settles quickly when calm is needed, and is intelligent enough to learn basic obedience without the Bulldog's characteristic stubbornness shutting down training sessions.
Challenging Scenario
You get a dog that inherits the Bulldog's stubbornness and the Boston Terrier's tendency to be selectively deaf when something more interesting is happening. Some individuals may show resource guarding (protecting food, toys, or sleeping spaces), territorial barking, or leash reactivity toward other dogs — traits that appear in both parent breeds at moderate rates.
Trait Variability at a Glance
| Trait | Leans Boston Terrier | Leans English Bulldog | Predictability |
|---|---|---|---|
| Energy Level | Playful, 30–45 min daily activity | Low-key, 15–25 min daily activity | Moderate — often visible by 12 weeks |
| Vocalization | Alert barker, may bark at door | Quiet, occasional snoring/grunting | Low — hard to predict |
| Sociability with Dogs | Generally friendly, may be selective | Same-sex aggression possible | Low — depends on socialization |
| Separation Tolerance | Moderate; 3–4 hours alone OK | Low; prone to separation anxiety | Low — both breeds bond tightly |
| Trainability | Quick learner, food-motivated | Slower, requires patience | Moderate — test at 8–10 weeks |
Coat, Shedding, and the Hypoallergenic Question
Is this mix hypoallergenic? No. Neither the English Bulldog nor the Boston Terrier carries the low-shedding coat genes found in breeds like Poodles or Bichon Frises. The English Bulldog and Boston Terrier mix will have a short, smooth, single-layer coat that sheds moderately year-round, with seasonal increases in spring and fall.
Coat colors vary widely: brindle, seal (black with reddish cast in sunlight), white, fawn, pied (white with colored patches), and combinations thereof. The Boston Terrier's classic "tuxedo" markings (white chest, white muzzle band) may or may not appear. Wrinkles depend on how much Bulldog facial structure the dog inherits — more wrinkles means more daily cleaning of skin folds.
Grooming Needs
- Brushing: Rubber curry brush or bristle brush, 2–3 times per week to manage shedding and distribute skin oils
- Bathing: Every 4–6 weeks, or as needed; use a mild canine shampoo (pH 6.5–7.5) to avoid drying sensitive skin
- Facial folds: If inherited from the Bulldog side, clean daily with a damp cloth or veterinary-recommended wipe; dry thoroughly to prevent fold dermatitis (yeast/bacterial infection in skin folds)
- Nails: Trim every 2–3 weeks; both breeds tend to have low activity levels that don't naturally wear nails down
- Ears: Check weekly; both breeds have erect or semi-erect ears prone to wax buildup — clean with a vet-approved ear solution as needed
Budget roughly $30–$50 per month for grooming supplies, or $40–$65 per professional grooming session if you prefer to outsource bath-and-brush visits.
Health Considerations: Hybrid Vigor vs. Reality
Let's address the elephant in the room: hybrid vigor does not eliminate health risks in this cross. The concept of heterosis (hybrid vigor) applies when two genetically distant populations are crossed, potentially reducing the expression of recessive disorders. However, when both parent breeds share the same structural health issues — particularly brachycephalic obstructive airway syndrome (BOAS) — crossbreeding does not make those issues disappear.
According to research published in the Canine Genetics and Epidemiology journal, crossbreed dogs do show modest reductions in some inherited disorders, but structural issues tied to shared breed conformation (like flat faces) persist at high rates when both parents carry those traits.
Health Conditions to Screen For
| Condition | Inherited From | Prevalence / Notes | Screening / Prevention |
|---|---|---|---|
| Brachycephalic Obstructive Airway Syndrome (BOAS) | Both breeds | Very high risk; stenotic nares, elongated soft palate, everted laryngeal saccules | Vet airway assessment by 6 months; avoid heat/exertion |
| Patellar Luxation | Boston Terrier (primary) | Common in small breeds; kneecap slips out of groove, grades I–IV | OFA patella evaluation; maintain lean weight |
| Hip Dysplasia | English Bulldog (primary) | OFA data: ~38% of Bulldogs show dysplastic hips | OFA/PennHIP screening of parents; joint supplements |
| Allergies (Atopic Dermatitis) | Both breeds | Environmental and food allergies; itchy skin, ear infections, paw licking | Limited-ingredient diet trials; allergy testing if chronic |
| Eye Conditions (Cataracts, Corneal Ulcers) | Both breeds | Prominent eyes prone to injury; juvenile cataracts in Boston lines | CERF/OFA eye exam of parents; annual vet ophthalmology check |
| Cherry Eye | English Bulldog (primary) | Prolapsed third eyelid gland; red mass in eye corner | Surgical correction if it occurs; do not remove the gland |
| Intervertebral Disc Disease (IVDD) | Both (chondrodystrophic builds) | Disc degeneration in the spine; can cause pain, paralysis | Avoid jumping from heights; harness instead of collar; maintain lean BCS |
Expected lifespan for the English Bulldog and Boston Terrier mix typically falls between 10 and 13 years, benefiting somewhat from the Boston Terrier's longer average lifespan compared to the purebred Bulldog. Keeping your dog at a lean body condition score (BCS 4–5 out of 9) is the single most impactful thing you can do to extend both lifespan and quality of life.
Cost: What You'll Pay for This Designer Mix
Purchase Price
- Breeder puppies: $800–$2,500, with most falling in the $1,200–$1,800 range. Higher prices reflect OFA health testing on both parents, early neurological stimulation (ENS) protocols, and breeder support contracts.
- Rescue/adoption: $150–$450 through breed-specific rescues (Bulldog rescues, Boston Terrier rescues) or general shelters. Mixed breeds sometimes end up in rescue when owners underestimate the health care costs.
First-Year Budget Estimate
| Expense Category | Estimated Cost |
|---|---|
| Puppy purchase or adoption fee | $150–$2,500 |
| Initial veterinary (vaccines, spay/neuter, microchip) | $400–$900 |
| Supplies (crate, bed, harness, bowls, gates) | $200–$400 |
| Food (quality kibble, AAFCO complete and balanced) | $300–$500/year |
| Pet insurance (recommended for brachycephalic breeds) | $40–$80/month ($480–$960/year) |
| Training (group classes or private sessions) | $150–$500 |
| Total first-year estimate | $2,100–$5,760 |
Pet insurance is strongly recommended for any brachycephalic dog. BOAS surgery alone (soft palate resection, nostril widening) can cost $2,500–$6,000 if needed later in life. Enrolling as a puppy, before any pre-existing conditions are documented, gives you the best coverage. Companies like Trupanion, Healthy Paws, and Nationwide cover designer breeds — compare policies carefully for BOAS-specific exclusions, as some insurers classify it as a congenital condition.
Who Should (and Shouldn't) Get This Mix
Best Fit
- Apartment or condo dwellers: Moderate-to-low exercise needs and manageable size make this cross well-suited to smaller living spaces
- Families with older children (8+): Generally patient and affectionate, but the compact build means toddlers could accidentally injure a smaller individual
- First-time dog owners: Forgiving temperament, manageable grooming, and moderate training difficulty make this a reasonable starter dog — provided you're prepared for potential health expenses
- Older adults or lower-activity households: If the puppy leans toward the Bulldog side, exercise demands are minimal (15–25 minutes of walking daily)
- Warm-climate residents who have air conditioning: These dogs cannot tolerate heat; AC is non-negotiable in summer months
Poor Fit
- Highly active owners wanting a running/hiking partner: BOAS risk makes sustained vigorous exercise dangerous, especially in warm weather
- Budget-constrained households: Between insurance premiums, potential airway surgery, allergy management, and dental care (brachycephalic teeth crowd and decay faster), this cross can be expensive to maintain
- Owners who are away 8+ hours daily: Both parent breeds are companion dogs that thrive on human presence; extended isolation often triggers separation anxiety
- Hot climates without reliable AC: Brachycephalic dogs overheat rapidly — this is a genuine safety concern, not a minor inconvenience
Frequently Asked Questions
What two breeds make up this mix?
The English Bulldog (a stocky, low-energy companion breed originating in England) and the Boston Terrier (a compact, lively companion breed developed in the United States). Both are AKC-recognized breeds in the Non-Sporting Group. The cross is sometimes called a "Bullston" or "Boston Bulldog," though these names are informal and not recognized by any major registry.
How big will an English Bulldog and Boston Terrier mix get?
Adult weight typically ranges from 18 to 45 lb (8–20 kg), with most dogs landing between 25 and 35 lb (11–16 kg). Height at the shoulder is usually 13 to 17 inches (33–43 cm). The wide range reflects the significant size difference between the two parent breeds. Ask your breeder for parent weights to narrow the prediction.
What will the temperament be like?
Expect a friendly, people-oriented dog that bonds closely with family. Energy levels vary — some individuals are playful and moderately active (Boston influence), while others are notably laid-back (Bulldog influence). Stubbornness is possible from either parent, but most individuals respond well to patient, positive reinforcement training. Early socialization (exposure to diverse people, dogs, sounds, and environments between 8 and 14 weeks) is critical for a well-adjusted adult dog.
Is this mix hypoallergenic or low-shedding?
No. Neither parent breed carries low-shedding genes. This mix has a short, smooth coat that sheds moderately year-round with seasonal peaks. People with dog allergies are likely to react to this cross. If hypoallergenic qualities are important, consider mixes that include a Poodle or Bichon Frise parent instead.
What health issues might this mix inherit?
The highest-priority concern is brachycephalic obstructive airway syndrome (BOAS), which both parent breeds carry. Other risks include patellar luxation, hip dysplasia, atopic dermatitis (allergies), eye conditions (cataracts, corneal ulcers, cherry eye), and intervertebral disc disease. Responsible breeders screen parent dogs through OFA or equivalent health testing — always request documentation. Consult your veterinarian for a personalized health monitoring plan.
How much does this designer mix cost?
Breeder puppies typically cost $800 to $2,500, with most in the $1,200–$1,800 range. Adoption through rescues costs $150–$450. First-year total ownership costs (including veterinary care, supplies, food, and insurance) range from approximately $2,100 to $5,760. Ongoing annual costs after the first year are typically $1,500–$3,000, with higher amounts if health issues arise.
Can this mix be left alone during the workday?
Short periods (3–4 hours) are usually fine for a well-exercised, crate-trained adult. Full 8-hour workdays are challenging — both parent breeds are prone to separation anxiety. Solutions include a midday dog walker, doggy daycare 2–3 days per week, or a pet camera with treat-dispensing capability to break up alone time.
Are English Bulldog and Boston Terrier mixes good with other pets?
Generally yes, especially when raised with other animals from puppyhood. Some individuals may show same-sex dog aggression (a trait seen in both parent breeds) or high prey drive toward small animals. Introduce new pets gradually using positive reinforcement counter-conditioning protocols, and always supervise initial interactions.
Sources consulted for this profile include the AKC English Bulldog breed standard, the AKC Boston Terrier breed standard, and the Merck Veterinary Manual. Health prevalence data drawn from the Orthopedic Foundation for Animals (OFA) breed statistics and peer-reviewed veterinary literature.
Priya Sutaria
All our authors care for dogs every day — read more of their work on the authors page.
