French Bulldog Mix with Shih Tzu: The French Bull Tzu Breed Guide
Everything about the French Bulldog mix with Shih Tzu: size, temperament, health risks, grooming needs, cost.
If you've been researching the French Bulldog mix with Shih Tzu — sometimes called the French Bull Tzu or Shih Tzu Frenchie mix — you're looking at one of the more unusual small-breed designer crosses available today. This mix combines the stocky, bat-eared French Bulldog with the long-coated, regal Shih Tzu, producing a compact companion dog that typically weighs between 12 and 25 pounds. But because these two parent breeds differ significantly in build, coat, and even respiratory anatomy, predicting exactly what any individual puppy will look like or how it will behave requires understanding both sides of the pedigree.
This guide breaks down the real-world variability you'll encounter with this mix, the health conditions that both parent breeds carry, and whether this cross is a realistic fit for your household. We'll also address the hybrid vigor myth head-on, because both French Bulldogs and Shih Tzus carry enough breed-specific genetic baggage that mixing them does not guarantee a healthier dog.
Parent Breed Breakdown: French Bulldog and Shih Tzu
Before evaluating the mix, you need to understand what each parent breed brings to the table. The French Bulldog and Shih Tzu share some traits — both are small companion breeds, both are generally affectionate — but they diverge sharply in physical structure, coat, exercise tolerance, and trainability.
| Trait | French Bulldog | Shih Tzu |
|---|---|---|
| AKC Group | Non-Sporting | Toy |
| Weight Range | 16–28 lb (7–13 kg) | 9–16 lb (4–7 kg) |
| Height at Shoulder | 11–13 in (28–33 cm) | 9–10.5 in (23–27 cm) |
| Coat Type | Short, smooth, single coat | Long, flowing, double coat |
| Shedding Level | Low to moderate | Low shedding but high matting risk |
| Muzzle Shape | Brachycephalic (extremely flat) | Brachycephalic (moderately flat) |
| Exercise Needs | 20–30 min/day, heat-sensitive | 20–40 min/day, moderate tolerance |
| Trainability | Moderate — can be stubborn | Moderate — responds to patience |
| Lifespan | 10–12 years | 10–18 years |
| Common Health Issues | BOAS, IVDD, hip dysplasia, allergies | Eye conditions, hip dysplasia, renal dysplasia |
Both breeds are brachycephalic, meaning they have shortened skulls and flat faces. This is the single most important shared trait because it directly impacts breathing, heat tolerance, and anesthesia risk. Any puppy from this cross will almost certainly inherit some degree of brachycephalic anatomy, which carries lifelong health implications we'll cover in detail below.
Understanding Generations: F1, F1B, and Beyond
Designer dog breeds are classified by generation, which affects trait predictability:
- F1 (First Generation): Direct cross of a purebred French Bulldog and a purebred Shih Tzu. Maximum genetic diversity but least predictable traits — puppies in the same litter can look dramatically different.
- F1B (Backcross): An F1 French Bull Tzu bred back to one of the parent breeds (usually the Shih Tzu to reduce brachycephalic severity or the Frenchie to reinforce stocky build). Slightly more predictable.
- F2 (Second Generation): Two F1 French Bull Tzus bred together. Trait segregation becomes more pronounced — you may see puppies that strongly favor one grandparent breed.
- Multigen (F3+): Multiple generations of French Bull Tzu to French Bull Tzu breeding. Theoretically more consistent, but this mix is rare enough that established multigen lines barely exist as of 2026.
Most French Bulldog mixes with Shih Tzus available from breeders are F1 crosses. Multigen programs for this specific pairing are uncommon because neither parent breed is as commercially popular for designer breeding as Poodles or Golden Retrievers.
Why does generation matter? Because with an F1 cross, you genuinely cannot predict whether a puppy will inherit the Frenchie's short smooth coat or the Shih Tzu's long double coat, whether its ears will stand erect or drop, or whether its muzzle will be extremely flat or moderately shortened. By F2 and beyond, certain traits start to stabilize, but this mix simply doesn't have enough breeding history for reliable predictability.
Size, Build, and Physical Appearance
The French Bulldog mix with Shih Tzu falls into the small-dog category, but the range within that category is wider than many prospective owners expect. Here's what the data from both parent breeds tells us:
| Measurement | Minimum | Maximum | Most Common |
|---|---|---|---|
| Weight | 12 lb (5.4 kg) | 25 lb (11.3 kg) | 15–20 lb (6.8–9.1 kg) |
| Height at Shoulder | 9 in (23 cm) | 13 in (33 cm) | 10–12 in (25–30 cm) |
The wide range exists because the French Bulldog is substantially heavier and more muscular than the Shih Tzu. An F1 puppy that takes after its Frenchie parent will be stockier, broader-chested, and heavier. One that favors the Shih Tzu parent will be more delicate and lighter-boned. There's no reliable way to predict which direction an individual puppy will go until it's several months old.
Coat possibilities are equally varied. You might get:
- Short and smooth (Frenchie-dominant) — low maintenance, moderate shedding, feels velvety to the touch
- Medium-length and slightly wavy (blended inheritance) — requires brushing 2–3 times weekly, may have a soft undercoat
- Long and flowing (Shih Tzu-dominant) — requires daily brushing, professional grooming every 6–8 weeks, high matting risk
Ear shape is another coin flip. French Bulldogs have their signature upright "bat ears," while Shih Tzus have long, pendant drop ears. Mixed puppies can inherit one of each (yes, really — asymmetrical ears happen), both upright, both dropped, or something in between with semi-prick ears that never fully stand or fully drop.
Temperament: Best-Case and Challenging Scenarios
Both parent breeds are companion dogs bred for human company, so the baseline temperament of a French Bulldog mix with Shih Tzu tends toward affectionate, people-oriented, and relatively low-drive. But "relatively" is doing heavy lifting here, because both breeds also carry traits that can challenge first-time owners.
Your French Bull Tzu inherits the Frenchie's clownish playfulness and the Shih Tzu's gentle, outgoing friendliness. The result: a happy, adaptable dog that greets visitors warmly, plays in short bursts, settles calmly on the couch, and tolerates children and other pets without fuss. This is the outcome most breeders aim for and many owners experience.
Your dog inherits the Frenchie's stubbornness and territorial streak combined with the Shih Tzu's sensitivity and tendency to bark at stimuli. The result: a dog that's difficult to house-train (both breeds are notoriously slow to potty train), reactive to doorbells and passersby, prone to separation anxiety when left alone for long stretches, and resistant to training methods that rely on force or correction. This dog needs patient, positive-reinforcement-based training and a household where someone is home most of the day.
A few temperament traits are fairly consistent across this mix regardless of which parent they favor:
- Companion-oriented: These dogs want to be near their people. They're not outdoor kennel dogs and they don't do well with 8+ hours of daily solitude.
- Moderate energy: Expect 20–40 minutes of daily activity, split into short sessions. Neither parent breed is built for endurance exercise.
- Alertness: Both breeds will vocalize when someone approaches. This is a watchdog, not a guard dog — they'll bark, then likely want to be petted by the intruder.
- Stubbornness in training: French Bulldogs rank low in working obedience intelligence (they were bred to be companions, not working dogs), and Shih Tzus are similarly independent. Use high-value treats and keep sessions under 10 minutes.
For training, stick exclusively to positive reinforcement methods — reward-based clicker training, treat motivation, and counter-conditioning for any reactivity. Neither breed responds well to aversive techniques, and their brachycephalic anatomy makes any training involving physical correction potentially dangerous to their airway.
Health Considerations: Hybrid Vigor vs. Reality
This is where we need to have an honest conversation. The marketing around designer dogs often invokes "hybrid vigor" — the idea that crossing two purebreds automatically produces a healthier dog. The reality, according to veterinary geneticists and studies published in the Journal of the American Veterinary Medical Association, is more nuanced. Hybrid vigor (heterosis) primarily benefits traits controlled by many genes and influenced by inbreeding depression. It does not eliminate conditions caused by dominant genes, structural conformation issues, or conditions that both parent breeds share.
And here's the critical problem with this particular mix: both parent breeds are brachycephalic. This means you are not diluting the flat-face trait — you're doubling down on it. Every puppy from this cross will have a shortened skull, and many will inherit enough structural compromise to develop clinical signs of brachycephalic obstructive airway syndrome (BOAS).
Health Conditions to Screen For
| Condition | Inherited From | Estimated Prevalence in Parent Breeds | Screening Test |
|---|---|---|---|
| BOAS (Brachycephalic Obstructive Airway Syndrome) | Both breeds | French Bulldogs: ~50% show clinical signs; Shih Tzus: ~30% | Functional airway assessment by veterinarian |
| Hip Dysplasia | Both breeds | French Bulldogs: ~20% (OFA data); Shih Tzus: ~14% | OFA or PennHIP radiographic evaluation |
| Patellar Luxation | Both breeds (more common in Shih Tzus) | Shih Tzus: ~15%; French Bulldogs: ~8% | Orthopedic examination |
| Intervertebral Disc Disease (IVDD) | French Bulldog (chondrodystrophic breed) | French Bulldogs: lifetime risk ~15–20% | Neurological exam; MRI if symptomatic |
| Eye Conditions (entropion, cataracts, dry eye) | Both breeds | Shih Tzus: high prevalence of multiple eye conditions | CERF/OFA ophthalmologist evaluation |
| Allergies (atopic dermatitis) | French Bulldog (extremely common) | French Bulldogs: ~30–40% affected | Clinical diagnosis; allergy panel if needed |
| Renal Dysplasia | Shih Tzu | Shih Tzus: documented hereditary condition | Bloodwork, urinalysis, ultrasound |
A responsible breeder of this mix should provide health clearances for both parent dogs — not just say they're "vet checked." Ask for OFA hip and patella results, a veterinary ophthalmologist eye clearance, and documentation that the parent dogs have been evaluated for BOAS severity. If a breeder cannot provide these, walk away.
For any health concerns with your dog, always consult your veterinarian. Brachycephalic dogs require specific anesthetic protocols, and your vet needs to know your dog's full breed background to plan safely for any procedure.
Grooming and Daily Care Requirements
Grooming needs for a French Bulldog mix with Shih Tzu depend entirely on which coat type the individual dog inherits. This is one of the most unpredictable aspects of the cross.
| Coat Type | Brushing Frequency | Professional Grooming | Bathing | Estimated Annual Cost |
|---|---|---|---|---|
| Short/Smooth (Frenchie-type) | 1–2× per week | Not typically needed | Every 4–6 weeks | $100–$200 |
| Medium/Wavy (Blended) | 3–4× per week | Every 8–10 weeks | Every 3–4 weeks | $350–$550 |
| Long/Flowing (Shih Tzu-type) | Daily | Every 6–8 weeks | Every 2–3 weeks | $500–$900 |
Regardless of coat type, all dogs from this cross need attention to these areas:
- Facial folds: If your dog inherits the Frenchie's pronounced wrinkles, clean the folds daily with a damp cloth or veterinary-recommended wipe to prevent yeast and bacterial infections. Fold dermatitis is extremely common in French Bulldogs and any mix that inherits deep facial folds.
- Eyes: Both breeds have prominent, exposed eyes prone to injury and tear staining. Wipe around the eyes daily and watch for squinting, redness, or discharge — see your vet promptly if these appear.
- Ears: Drop ears (if inherited from the Shih Tzu side) need weekly cleaning and monitoring for infection. Upright ears (Frenchie-type) are generally lower maintenance but should still be checked monthly.
- Nails: Trim every 2–4 weeks. Small dogs often don't wear their nails down naturally, and overgrown nails alter foot structure and gait.
- Dental care: Both breeds are prone to dental disease due to crowded teeth in a shortened jaw. Daily tooth brushing with a dog-specific enzymatic toothpaste is strongly recommended. Budget for professional dental cleanings under anesthesia every 1–2 years ($300–$800 per cleaning depending on your region).
Cost Breakdown: Purchase Price and Annual Expenses
The French Bulldog mix with Shih Tzu occupies an unusual pricing tier. It's less expensive than a purebred French Bulldog (which can exceed $4,000–$8,000 from a health-tested breeder) but generally more expensive than many other small designer mixes because of the Frenchie parent's popularity and breeding challenges.
| Source | Price Range | Notes |
|---|---|---|
| Breeder (F1, health-tested parents) | $1,500–$3,500 | Wide range reflects Frenchie parent cost; breeders doing AI or C-sections charge more |
| Breeder (no health testing) | $800–$1,500 | Higher health risk; avoid if possible |
| Rescue/Adoption | $200–$600 | Uncommon in breed-specific rescue; check small-breed and Frenchie rescues |
French Bulldogs frequently require artificial insemination and cesarean sections due to their narrow hips and large-headed puppies, which drives up breeding costs even for mixed litters. Some breeders use a Shih Tzu as the dam (mother) to reduce birthing complications, since the smaller puppies are easier to deliver, but this is not universal.
First-Year Budget Estimate
Beyond the purchase price, plan for these first-year expenses:
- Veterinary care (initial exams, vaccines, spay/neuter): $600–$1,200
- Food (high-quality small-breed kibble or fresh diet): $300–$600/year
- Grooming (varies by coat): $100–$900/year
- Pet insurance (recommended for brachycephalic breeds): $40–$80/month ($480–$960/year)
- Supplies (crate, harness, bed, toys): $200–$400
- Training classes (puppy kindergarten + basic obedience): $200–$500
Realistic first-year total: $3,000–$7,500 depending on purchase source, coat-related grooming costs, and any unexpected health issues.
Who This Mix Suits Best
The French Bulldog mix with Shih Tzu is not a universal fit. Here's a practical framework for evaluating whether this dog aligns with your lifestyle:
- Live in an apartment or home without a large yard — these dogs don't need much space
- Are home most of the day or work from home — they need companionship
- Want a low-to-moderate exercise companion — short walks and indoor play suffice
- Have older children (8+) who understand how to handle small, fragile dogs gently
- Have experience with brachycephalic breeds and understand heat precautions
- Can budget for potential veterinary expenses related to airway, eye, or spinal issues
- Work long hours away from home — separation anxiety is common in both parent breeds
- Live in a hot climate and plan to spend significant time outdoors — brachycephalic dogs overheat dangerously fast
- Have toddlers who may accidentally injure a small, delicate dog
- Want a hiking partner or highly active dog — this mix cannot sustain vigorous exercise
- Cannot commit to regular grooming (if the dog inherits a longer coat)
- Are on a tight budget with no room for unexpected vet bills of $1,000–$5,000+
One critical note on heat safety: brachycephalic dogs cannot cool themselves efficiently through panting. When temperatures exceed 80°F (27°C), limit outdoor activity to early morning or evening, always carry water, and watch for excessive panting, blue-tinged gums, or collapse — these are emergency signs requiring immediate veterinary care.
Frequently Asked Questions
What two breeds make up this mix?
The French Bulldog mix with Shih Tzu is a cross between a purebred French Bulldog and a purebred Shih Tzu. Both are AKC-recognized companion breeds — the French Bulldog in the Non-Sporting Group and the Shih Tzu in the Toy Group. The resulting designer cross is not recognized by the AKC but may be registered with designer breed registries like the American Canine Hybrid Club (ACHC) or the Designer Breed Registry (DBR).
How big will this mixed breed get?
Most French Bull Tzus weigh between 15 and 20 pounds (6.8–9.1 kg) and stand 10–12 inches (25–30 cm) at the shoulder when fully grown. However, the range extends from as small as 12 pounds (5.4 kg) to as large as 25 pounds (11.3 kg) depending on which parent the individual puppy favors. Males tend to be slightly larger, but the variation within litters often exceeds the sex-based difference.
What will the temperament be like?
Expect an affectionate, people-oriented companion dog with moderate energy and a stubborn streak. Most French Bull Tzus are friendly with strangers and other dogs, but individual temperament varies widely. Early socialization (exposure to diverse people, environments, sounds, and other animals between 8 and 16 weeks of age) is essential regardless of genetic temperament tendencies. Both parent breeds can be slow to house-train — plan for 4–8 months of consistent crate training and scheduled potty breaks before reliable house manners develop.
Is this mix hypoallergenic or low-shedding?
No. Neither the French Bulldog nor the Shih Tzu is a hypoallergenic breed. The French Bulldog sheds moderately year-round, and while the Shih Tzu sheds less visibly (loose hair gets caught in the long coat rather than falling out), it produces the same allergenic dander and saliva proteins. If you have dog allergies, this mix is unlikely to be tolerable. For allergy sufferers seeking a small companion dog, mixes involving Poodle or Bichon Frise genetics are more likely to be low-allergen — though no dog is truly hypoallergenic.
What health issues might this mix inherit?
The most significant shared risk is brachycephalic obstructive airway syndrome (BOAS), since both parent breeds have flat faces. Other conditions to watch for include hip dysplasia, patellar luxation, intervertebral disc disease (IVDD, primarily from the Frenchie side), various eye conditions (cataracts, entropion, keratoconjunctivitis sicca), atopic dermatitis and skin allergies, and renal dysplasia (from the Shih Tzu side). Reputable breeders screen parent dogs for these conditions — always ask for documentation before purchasing a puppy.
How much does this designer mix cost?
From a responsible breeder who health-tests both parent dogs, expect to pay $1,500–$3,500 for a French Bulldog mix with Shih Tzu puppy. The price is driven largely by the French Bulldog parent's breeding costs, which often include artificial insemination and cesarean delivery. Adoption through a rescue is possible but uncommon — check with French Bulldog rescue networks and small-breed rescue organizations. Avoid breeders offering puppies below $1,000, as this typically indicates no health testing and potentially poor breeding practices.
Can this mix be left alone during the workday?
Short periods (3–4 hours) are generally manageable for an adult French Bull Tzu, but 8+ hours of daily solitude is likely to trigger separation anxiety, which both parent breeds are prone to. If you work outside the home, consider a dog walker, doggy daycare (if your dog is social with other dogs), or a pet camera with treat-dispensing capability to break up the day. Crate training helps prevent destructive behavior but should not be used for extended confinement beyond the dog's bladder capacity.
Sources: Breed health data referenced from the American Kennel Club French Bulldog page and the AKC Shih Tzu breed standard. Brachycephalic health information from the American Veterinary Medical Association and the Merck Veterinary Manual. Orthopedic prevalence data from the Orthopedic Foundation for Animals (OFA) breed statistics.
Jonas Cole
All our authors care for dogs every day — read more of their work on the authors page.
