Cavalier Shih Tzu Mix: The Complete Cava-Tzu Breed Guide

The Cavalier Shih Tzu mix — most commonly called the Cava-Tzu — pairs the gentle, people-oriented Cavalier King Charles Spaniel with the spunky, ancient-companion Shih Tzu. The result is a small, affectionate companion dog that typically weighs between 10 and 18 pounds and stands 9 to 14 inches tall. But because this is a designer crossbreed rather than a standardized breed, individual puppies can vary significantly in coat type, shedding level, energy, and even facial structure.

If you're researching the Cavalier Shih Tzu mix before bringing one home, this guide breaks down exactly what you can expect — and what you can't predict — so you can decide whether a Cava-Tzu is the right fit for your household.

What Two Breeds Make Up the Cavalier Shih Tzu Mix?

Every Cava-Tzu is a cross between two purebred parent breeds. Understanding each parent helps you anticipate the traits your dog might inherit.

Cavalier King Charles Spaniel (Parent 1)

The Cavalier King Charles Spaniel is a toy breed recognized by the American Kennel Club (AKC), originally bred as a lap companion for British nobility. Cavaliers are known for their silky, medium-length coats, large expressive eyes, and profoundly affectionate temperaments. They typically weigh 12–18 lb (5.4–8.2 kg) and stand 12–13 inches (30–33 cm) tall. The breed ranks consistently in the AKC's top 20 most popular breeds.

Key Cavalier traits that may pass to offspring:

• Gentle, eager-to-please temperament
• Silky, feathered coat with moderate shedding
• Strong bonding tendency — prone to separation anxiety
• Predisposition to mitral valve disease (MVD) and syringomyelia
• High food motivation (useful for training, risky for obesity)

Shih Tzu (Parent 2)

The Shih Tzu is an ancient Chinese companion breed, also AKC-recognized, originally kept by imperial families. They weigh 9–16 lb (4.1–7.3 kg), stand 9–10.5 inches (23–27 cm), and carry a distinctive double coat that is long, dense, and often described as "chrysanthemum-faced" due to the upward-growing hair on the muzzle. Shih Tzus are brachycephalic (flat-faced), which affects breathing, heat tolerance, and dental alignment.

Key Shih Tzu traits that may pass to offspring:

• Independent, sometimes stubborn personality
• Dense double coat — low-shedding but high-maintenance grooming
• Brachycephalic facial structure
• Predisposition to eye issues (entropion, dry eye) and hip dysplasia
• Lower trainability compared to spaniel-type breeds

Parent Breed Comparison

Trait	Cavalier King Charles Spaniel	Shih Tzu
Weight	12–18 lb (5.4–8.2 kg)	9–16 lb (4.1–7.3 kg)
Height	12–13 in (30–33 cm)	9–10.5 in (23–27 cm)
Coat Type	Silky, single, moderate shed	Dense double, low shed
Muzzle Shape	Moderate (mesocephalic)	Flat (brachycephalic)
Trainability	High — eager to please	Moderate — independent
Energy Level	Moderate (30–45 min/day)	Low–Moderate (20–30 min/day)
Lifespan	12–15 years	10–18 years

Understanding Cava-Tzu Generations: F1, F1B, F2, and Multigen

How Big Will a Cavalier Shih Tzu Mix Get?

Because both parent breeds are small companion dogs, the Cava-Tzu stays firmly in the toy-to-small range. However, the exact size depends on which parent's genes dominate and the generation of the cross.

Cava-Tzu Size Range

Measurement	Minimum	Maximum	Most Common Range
Weight	9 lb (4.1 kg)	20 lb (9.1 kg)	12–16 lb (5.4–7.3 kg)
Height (at shoulder)	8 in (20 cm)	14 in (36 cm)	10–12 in (25–30 cm)
Full-grown age	Most reach adult size by 10–12 months, fill out by 14–18 months

Weight outliers do occur. An F1 puppy that inherits the Cavalier's stockier bone structure and the Shih Tzu's dense coat can appear heavier than the numbers suggest. Conversely, a puppy leaning toward the Shih Tzu's compact frame may stay closer to 10 lb. Always ask the breeder for the parents' exact weights — this is the single best predictor of your puppy's adult size.

Coat Types, Shedding, and the Hypoallergenic Question

This is one of the most variable — and most misunderstood — aspects of the Cavalier Shih Tzu mix.

Three Possible Coat Outcomes

1. Cavalier-dominant coat: Silky, medium-length, single coat with feathering on ears, chest, legs, and tail. Moderate shedding year-round with seasonal increases. Easier to brush but sheds visibly on furniture.
2. Shih Tzu-dominant coat: Dense, long double coat that grows continuously (more like human hair). Very low shedding, but requires brushing 4–5 times per week and professional grooming every 6–8 weeks.
3. Blended coat: A wavy or slightly wiry medium-length coat with moderate density. Moderate shedding. The most common outcome in F1 litters.

Coat Trait Variability Chart

Trait	Cavalier-Leaning	Blended	Shih Tzu-Leaning
Coat texture	Silky, flat	Wavy, medium	Dense, long, flowing
Shedding level	Moderate (3/5)	Low–Moderate (2/5)	Low (1/5)
Brushing frequency	2–3× per week	3–4× per week	4–5× per week
Professional grooming	Every 10–12 weeks	Every 8–10 weeks	Every 6–8 weeks
Estimated annual grooming cost	$200–$350	$350–$550	$500–$800

Common coat colors include Blenheim (chestnut and white), tricolor (black, white, and tan), black and white, gold and white, and brindle patterns. Color inheritance is highly unpredictable in mixed litters.

Temperament: What to Expect From a Cava-Tzu

Both parent breeds were developed exclusively as companion dogs, which means the Cava-Tzu is overwhelmingly a people-oriented, affectionate dog. But "companion" doesn't mean "identical personality."

Best-Case Temperament Scenario

Your Cava-Tzu inherits the Cavalier's gentle eagerness and the Shih Tzu's playful confidence. The result: a dog that greets visitors warmly, settles calmly on your lap, plays enthusiastically for short bursts, and adapts easily to apartment living, travel, or multi-pet households. This is the temperament most breeders aim for and most owners report.

Challenging Temperament Scenarios

• Shih Tzu stubbornness + Cavalier sensitivity: Some Cava-Tzus inherit the Shih Tzu's independent streak combined with the Cavalier's emotional sensitivity. These dogs shut down under harsh corrections and resist training that isn't engaging. Positive reinforcement (treats, praise, play rewards) is essential — never use aversive methods like shock collars or alpha rolls, which will damage trust with this temperament type.
• Separation anxiety: Both parent breeds bond intensely with their people. Cava-Tzus left alone for 6+ hours daily are at high risk for separation anxiety, manifesting as destructive chewing, excessive barking, or house-soiling. This mix is best suited to households where someone is home often or where the dog can accompany you to work.
• Brachycephalic-related irritability: If your Cava-Tzu inherits a flat face, they may overheat easily, snore, and become cranky in hot weather or after exertion. This isn't a temperament flaw — it's physical discomfort. Keep exercise gentle and avoid midday walks in temperatures above 80°F (27°C).

Socialization and Training Notes

Start socialization between 8 and 16 weeks — this is the critical developmental window identified by the AVMA. Expose your Cava-Tzu puppy to diverse people, surfaces, sounds, and other vaccinated dogs. Use high-value treats (small pieces of boiled chicken, freeze-dried liver) and keep sessions under 5 minutes for young puppies. This breed mix responds beautifully to clicker training and lure-reward methods.

Health Considerations: Hybrid Vigor vs. Reality

One of the most persistent myths in the designer dog world is that mixed breeds automatically avoid the health problems of their parent breeds through "hybrid vigor." The reality is more nuanced.

Conditions Inherited From the Cavalier Side

• Mitral Valve Disease (MVD): Over 50% of Cavaliers develop MVD by age 5, and nearly all by age 10, according to the Merck Veterinary Manual. Cava-Tzus may inherit this predisposition. Annual cardiac auscultation starting at age 2 is strongly recommended.
• Syringomyelia (SM): A neurological condition where the skull is too small for the brain, causing fluid-filled cavities in the spinal cord. Estimated to affect up to 30–40% of Cavaliers to some degree. Symptoms include neck scratching, yelping, and sensitivity to touch around the head and neck.
• Episodic Falling: A recessive neurological condition causing muscle rigidity during exercise or excitement. Genetic testing is available and responsible breeders screen for it.

Conditions Inherited From the Shih Tzu Side

• Brachycephalic Obstructive Airway Syndrome (BOAS): If your Cava-Tzu inherits a shortened muzzle, they may have narrowed nostrils (stenotic nares), an elongated soft palate, or a hypoplastic trachea. Signs include snoring, noisy breathing, exercise intolerance, and heat sensitivity. Surgical correction is sometimes needed.
• Ocular issues: Entropion (inward-rolling eyelids), keratoconjunctivitis sicca (dry eye), and progressive retinal atrophy (PRA) all occur in Shih Tzus and may appear in the mix.
• Hip dysplasia and patellar luxation: Both conditions occur in Shih Tzus and Cavaliers. Maintain your dog at a lean body condition score (BCS 4–5 out of 9) to reduce joint stress.

Conditions Shared by Both Breeds

• Patellar luxation (kneecap dislocation) — common in all small breeds
• Dental crowding and periodontal disease — especially if the dog inherits a shorter jaw with the same number of teeth
• Otitis externa (ear infections) — floppy ears from the Cavalier side trap moisture
• Obesity — both breeds love food; a sedentary Cava-Tzu gains weight rapidly

Recommended health screening: Ask the breeder for proof of cardiac evaluation (OFA or board-certified cardiologist), OFA patella evaluation, and CERF/CAER eye examination for both parent dogs. For the Cavalier parent, a veterinary neurologist evaluation for SM is ideal. Consult your veterinarian about establishing a breed-appropriate wellness plan for your specific dog.

Grooming, Exercise, and Daily Care

Grooming Routine

Your grooming workload depends entirely on which coat your Cava-Tzu inherits, but plan for the higher-maintenance scenario:

• Brushing: Use a slicker brush (such as the Chris Christensen Big G or a comparable quality brush, $35–$65) 3–5 times per week. Focus on behind the ears, the chest, and the "pants" area where matting starts.
• Bathing: Every 3–4 weeks using a gentle, dog-specific shampoo (pH 6.5–7.5, never human shampoo which is too acidic for canine skin).
• Face cleaning: If your dog inherits a shorter muzzle, wipe facial folds daily with a damp cloth or veterinary-recommended wipe to prevent fold dermatitis.
• Ear care: Check ears weekly. Clean with a veterinary ear cleanser if you see wax buildup. Floppy-eared Cava-Tzus are prone to yeast infections.
• Nail trimming: Every 2–3 weeks. Overgrown nails alter gait and contribute to patellar stress.
• Dental care: Daily tooth brushing with enzymatic dog toothpaste. Small mouths crowd teeth, accelerating plaque buildup. Professional dental cleanings under anesthesia are typically needed every 1–2 years ($300–$800 per cleaning).

Exercise Requirements

The Cava-Tzu is a low-to-moderate energy dog. Plan for:

• 20–40 minutes of total daily activity, split into two or three short sessions
• Leisurely leash walks (not jogging — especially in brachycephalic-leaning dogs)
• Indoor play: fetch in a hallway, snuffle mats, puzzle feeders
• Avoid exercise in temperatures above 80°F (27°C) or below 20°F (-7°C) — small dogs with possible brachycephalic traits are vulnerable to both heat stroke and hypothermia

For brachycephalic-leaning Cava-Tzus, consider a harness (not a collar) to avoid tracheal pressure during walks. The Ruffwear Front Range or a similar padded Y-harness ($30–$45) distributes pressure across the chest.

Cost Breakdown: How Much Does a Cavalier Shih Tzu Mix Cost?

Cava-Tzu Cost Estimates (2026)

Expense Category	Low	Typical	High
Puppy purchase (from breeder)	$800	$1,500–$2,500	$3,500+
Adoption/rescue fee	$150	$300–$500	$600
First-year veterinary care (vaccines, spay/neuter, wellness)	$500	$800–$1,200	$1,800+
Annual ongoing care (food, grooming, preventives, vet visits)	$1,200	$1,800–$2,800	$4,000+
Emergency/specialty care fund (recommended)	Set aside $1,000–$3,000 or carry pet insurance ($30–$65/month for this mix)

Breeder vs. Rescue Availability

Cava-Tzus are not as widely produced as Labradoodles or Goldendoodles, so breeder availability is more limited. Expect to join waitlists of 3–12 months for litters from health-testing breeders. Prices above $3,500 are unusual unless the breeder provides extensive health guarantees, early neurological stimulation (ENS), and puppy socialization programs.

For rescue options, check Cavalier-specific rescue organizations (such as the American Cavalier King Charles Spaniel Club Rescue Network) and Shih Tzu rescue groups — both occasionally take in mixed-breed dogs. Small-breed mixes also appear in general shelters, though identifying a specific mix visually is unreliable without DNA testing (Embark or Wisdom Panel, $70–$200).

Red flags in breeders: No health testing documentation, unwillingness to let you meet the parent dogs, multiple litters always available, prices significantly below $800 (often indicates puppy mills or backyard breeders), and no contract requiring the dog be returned if you can't keep it.

Who Is the Cavalier Shih Tzu Mix Best Suited For?

Frequently Asked Questions

The information in this guide is for educational purposes and does not replace professional veterinary advice. Always consult your veterinarian for health decisions specific to your dog. If you suspect your dog has ingested a toxic substance, contact ASPCA Animal Poison Control at (888) 426-4435 (24/7, consultation fee applies).