Is the Shih Tzu Hypoallergenic? Long Coat, High Grooming, Normal Allergen Load
No. The Shih Tzu is not hypoallergenic. It scores 3.0 out of 10 on the Hypoallergenic Score because its long double coat, while low-shedding, traps dander and saliva-laden hair that requires daily grooming to manage — and every dog produces Can f 1 in its skin and saliva regardless of coat length. A low-shed coat does not mean low allergen.
9 peer-reviewed sources
Dog breedKey facts
The AKC rates the Shih Tzu a 2 out of 5 shedder with a long double coat and a 1 out of 5 drooler.
The major dog allergen Can f 1 is made in every dog's salivary and sebaceous glands regardless of coat length or shed rate.
The ACAAI states that studies have not shown any dog can be hypoallergenic.
Hypoallergenic dog breeds carried more Can f 1 in their hair (2.26 vs 0.77 µg/g) than ordinary breeds in direct measurement studies.
Can f 1 was detectable in 94.2% of 173 single-dog homes regardless of breed or shedding classification.
The Shih Tzu's coat is long and low-shedding, and that fools people into thinking it is gentle on allergies. The allergen is Can f 1 in dander and saliva, not the hair, so coat length is almost beside the point. A small dog produces less total dander than a large one, but the daily grooming releases what is trapped in that long coat — if you are allergic, test before you assume the low shed protects you.
How we got to this score
The Curex Hypoallergenic Score isn't a gut call. It's a weighted sum of five measurable factors — here's exactly how this breed scored on each.
A small, long-coated companion breed with a low shed rate (AKC 2/5) and no drool (1/5). The long double coat traps dander and loose hair, but the coat itself is a reservoir — daily grooming releases allergen-laden hair and dander into the air. The low shed does not mean low Can f 1 production.
No dog breed is 100% hypoallergenic — every dog produces Can f 1; breeds differ only in how much allergen they shed into your home and how easily you can keep it out of your air.
| Factor | Weight | Allergen-friendliness | Score |
|---|---|---|---|
| Allergen productionAll dogs produce Can f 1 in saliva, dander, and sebum regardless of a long double coat (Vredegoor 2012; ACAAI). | 40% | 2/10 | |
| SheddingAKC rates the Shih Tzu 2 out of 5 — low shedding; the long double coat traps loose hair rather than releasing it freely. | 20% | 5/10 | |
| DanderDerived from the 2/5 shed; the long coat traps dander but daily grooming releases it into the air, keeping this score at 3. | 15% | 3/10 | |
| Saliva spreadAKC drooling 1 out of 5 — minimal; the Shih Tzu's brachycephalic face does not produce significant saliva-borne allergen. | 15% | 7/10 | |
| GroomabilityAKC grooming 5 out of 5 — high-maintenance double coat; daily grooming is necessary but releases trapped allergen into the air. | 10% | 2/10 | |
| Weighted composite score | 3/10 | ||
How the Curex Hypoallergenic Score works
The Curex Hypoallergenic Score rates a breed from 1 to 10, where 10 means the lowest realistic allergen burden for an allergic household. It is a transparent editorial rubric built from documented published sources — not a lab measurement of any specific Shih Tzu. Each score derives from AKC breed-trait ratings (shedding, drooling, and grooming on a 1-to-5 scale) combined with established allergen-biology evidence on Can f 1 and Can f 5. Five factors are weighted. Allergen production carries 40 percent because how much Can f 1 a dog makes is the biggest symptom driver and the factor owners can least control — every dog produces it in skin, saliva, and sebum regardless of breed. Shedding is 20 percent because loose, allergen-coated hair and dander are the primary delivery vehicles. Dander adds 15 percent: a low-shedding coat like the Shih Tzu's traps dander, but daily grooming releases it, which is why the dander score stays at 3/10 rather than rising. Saliva spread is 15 percent, and groomability carries the final 10 percent. Each factor is scored 1 to 10 and multiplied by its weight; the weighted sum is rounded to the nearest half point. The score reflects exposure potential, not personal sensitivity — two people can live with the same Shih Tzu and react very differently.
| Factor | Weight | A 10/10 means |
|---|---|---|
| Allergen production | 40% | All dogs produce Can f 1 in saliva, dander, and sebum regardless of a long double coat (Vredegoor 2012; ACAAI). |
| Shedding | 20% | AKC rates the Shih Tzu 2 out of 5 — low shedding; the long double coat traps loose hair rather than releasing it freely. |
| Dander | 15% | Derived from the 2/5 shed; the long coat traps dander but daily grooming releases it into the air, keeping this score at 3. |
| Saliva spread | 15% | AKC drooling 1 out of 5 — minimal; the Shih Tzu's brachycephalic face does not produce significant saliva-borne allergen. |
| Groomability | 10% | AKC grooming 5 out of 5 — high-maintenance double coat; daily grooming is necessary but releases trapped allergen into the air. |
Each factor is scored 1–10 (10 = lowest allergen burden), then weighted and summed to a single 1–10 score. Every breed is scored on the same model, so the rankings form one consistent dataset.
Long double coat, low shed, high grooming: the Shih Tzu allergen reality
The protein driving most dog allergies is Can f 1, a small lipocalin produced in salivary and sebaceous skin glands — not in the hair itself. The ACAAI states that studies have not shown any dog can be hypoallergenic. Around 50 to 75 percent of dog-allergic patients show IgE reactivity to Can f 1 (Thermo Fisher Phadia), making it the standard marker for household dog exposure. The Shih Tzu is a low-shedding breed (AKC 2/5) with a long double coat that traps loose hair and dander. This is the coat-trap framing — the same principle that applies to the Poodle and Bichon Frise in the D_marketed bundle, but on a smaller, brachycephalic companion dog. The low shed reduces visible hair on furniture; it does not reduce Can f 1 output. At 9 to 16 pounds, the Shih Tzu is a small dog with a small skin surface area, which limits total dander mass compared to a large breed. The long double coat, however, acts as a reservoir. Daily grooming — brushing, combing, and occasional professional clipping — releases the trapped allergen-laden hair and dander into the air. The grooming process itself becomes an exposure event. The minimal drool (AKC 1/5) means the saliva route is negligible, but the dander route is the primary concern. Vredegoor et al. (JACI 2012) found that hypoallergenic-marketed breeds carried higher Can f 1 in their hair (2.26 vs 0.77 µg/g). Nicholas et al. (Am J Rhinol Allergy 2011) found detectable Can f 1 in 94.2 percent of 173 single-dog homes with no breed-based difference. The Shih Tzu's allergen profile closely parallels the Havanese in the D_everyday2 bundle — both are small, long-coated, low-shedding companion breeds with the same score, but the Havanese page owns the Cuban-breed framing while this page owns the Tibetan-breed framing.
“Short-haired or non-shedding breeds are safe because there’s less hair.”
The allergen is a microscopic protein in dander, saliva and skin oils. Hair is just the carrier.
Where the allergen comes from
Overall load for this breed: High
- DanderLow
Low shed (2/5) from a long double coat; the coat traps dander, but daily grooming releases it into the air.
- SalivaLow
AKC drooling 1/5 — minimal; the brachycephalic face does not produce significant saliva-borne allergen.
- Skin/sebumLow
Sebaceous oils carry Can f 1 and cling to the long double coat; the coat traps the allergen rather than shedding it freely.
- UrineLow
Minor route; intact males also produce Can f 5, a prostatic kallikrein, that falls sharply after neutering.
What the Shih Tzu's long double coat actually means for allergen exposure
Hypoallergenic potential is about how much allergen-laden material a dog spreads and how easily you can interrupt that spread. Higher scores mean friendlier for allergies. The Shih Tzu looks like a low-shedding breed — and in terms of visible hair on furniture, it is. But the long double coat that traps dander also requires daily grooming that releases it, and the low shed does not reduce Can f 1 production.
Shedding
LowAKC 2/5 shedder; the long double coat traps loose hair and dander rather than releasing them freely into the environment.
Dander
LowSmall body (9-16 lb) limits total dander mass, but daily grooming releases trapped dander into the air, keeping this score at 3.
Drooling
LowAKC 1/5 drooler — minimal; the brachycephalic face does not produce significant saliva-borne allergen.
Grooming needs
HighAKC grooming 5/5; daily brushing and professional clipping every 4-6 weeks are necessary but release trapped allergen into the air.
Coat type
LowLong double coat traps dander and loose hair, reducing passive airborne dispersal but creating a grooming-release dynamic.
A higher allergy-friendliness score means the trait contributes less allergen to your home. Levels reflect each trait’s relative contribution to exposure — not grooming convenience.
Confirm it’s really a pet allergy.
Symptoms blamed on a pet are often pollen, dust mites, or mold. A simple at-home test from Curex measures your specific IgE to dog and cat allergens — so you treat the right trigger instead of guessing.
Take the allergy quizWhat it really costs an allergic owner
The Shih Tzu is among the highest-grooming breeds — the long double coat requires daily brushing and professional clipping every four to six weeks. For an allergic owner, grooming costs are amplified because the grooming process itself releases allergen. The small body size means lower dander mass than a large breed, but the grooming frequency and the need for professional grooming (or a non-allergic family member to handle it) add significant cost. The overall added cost for an allergic Shih Tzu owner sits in the middle range for this bundle — above the short-coated breeds with minimal grooming, but below the giant breeds with high food and HEPA costs. The most cost-effective first step is confirming the allergen trigger before spending on renovations.
HEPA air purifier(s)
$150-$200 upfront, $40-$60/yr filtersRoom-sized HEPA units for shared living areas and the bedroom; a small dog releases less dander than a large one, but the grooming-release dynamic makes continuous filtration important.
Professional grooming
$600-$1,200/yrFull grooming every 4-6 weeks includes bathing, blow-drying, brushing, and clipping — all of which release trapped allergen. A non-allergic family member or professional groomer should handle this.
At-home grooming supplies
$20-$40/monthDaily brushing with a slicker brush and comb, plus allergen-removal wipes for in-between maintenance. The grooming process itself releases allergen, so a HEPA-filtered vacuum for the grooming area is useful.
Allergy-friendly flooring
$1,000-$5,000 one-timeHard flooring removes the dander reservoir that carpet becomes; the Shih Tzu's low shed means less accumulation than a heavy shedder, but the grooming-release dynamic still deposits allergen on floors.
HVAC and vacuum upgrades
$150-$500 + $50-$120/yrHigh-MERV HVAC filters and a sealed HEPA vacuum; change filters monthly.
Antihistamines and nasal sprays
$60-$240/yrDaily OTC antihistamines and a steroid nasal spray for baseline symptom control.
Allergist evaluation and treatment
Varies; often partly insuredComponent-resolved IgE testing and possible immunotherapy address the underlying sensitization; the disease-modifying option when environmental controls fall short.
Ranges are rough estimates for budgeting only and vary by region, home size, and how reactive you are.
Who the Shih Tzu realistically suits
The Shih Tzu is a small, affectionate, and adaptable companion breed bred for palace life in Tibet. Its indoor lifestyle means it is a constant presence in shared living spaces, distributing Can f 1 from dander and minimal drool throughout the home daily. Suitability for an allergic owner depends on your sensitization severity, not on the breed's low shed rate. The low-shed coat creates the most persistent coat-trap misconception in this bundle: the dog looks easy to live with for allergies because it sheds little visible hair. But the long double coat is a reservoir that requires daily grooming — and that grooming process releases the trapped allergen. A low-shed, high-grooming dog is not a low-allergen dog.
Mild allergy
People with mild, well-controlled dog allergy may manage a Shih Tzu with a consistent plan: HEPA air purifiers in shared rooms, a strict pet-free bedroom, hard flooring, and grooming performed by a non-allergic person or professional groomer. The minimal drool (1/5) is not a significant factor. The small body size means total dander mass is low, which helps.
Moderate to severe allergy
Usually not workable without medical evaluation and possibly immunotherapy. A small indoor companion dog distributing dander through daily grooming creates a sustained allergen load that is difficult to adequately manage with environmental controls alone for someone with moderate-to-severe dog allergy or allergic asthma.
Kids & asthma
Extra caution for households with asthmatic or eczema-prone children. The Shih Tzu is a small, indoor breed that spends considerable time in close contact with its family, keeping Can f 1 levels elevated continuously. Early-life pet exposure has mixed evidence and is not a reliable route to building immunity in already-allergic children. A pediatric allergist assessment should precede any adoption decision.
Can you build tolerance? (immunotherapy for pet allergy)
Environmental controls reduce Can f 1 in your home but do not change how your immune system responds to it. Allergen immunotherapy is the one treatment that can. By delivering gradually increasing, controlled doses of dog allergen through subcutaneous shots (SCIT) or sublingual drops (SLIT), immunotherapy retrains the immune response away from the IgE-mediated pathway toward tolerance. It is the only treatment regarded as disease-modifying: benefits can persist after the course ends, unlike antihistamines and nasal sprays that only work while you take them. For dog allergy specifically, honest expectation-setting is essential. Cat-allergy immunotherapy has solid randomized controlled trial evidence — Varney et al. (Clin Exp Allergy 1997) found symptoms dropped from 61.6 to 17.1 in actively treated patients, and Alvarez-Cuesta et al. (Allergy 2007) reported a 62 percent reduction with sublingual therapy. Dog-allergy immunotherapy is much weaker. A 2016 review in Annals of Allergy, Asthma & Immunology by Smith and Coop concluded that studies over 40 years "failed to demonstrate any clearly reproducible clinical evidence" of effectiveness. Dog extracts are less standardized, and dogs have multiple relevant allergens including the male-dog-specific Can f 5. A typical AIT course runs three to five years, with gradual improvement over months. It is not a cure or a guarantee. For people with confirmed dog allergy not controlled by avoidance and medication, immunotherapy is the most rational next step under allergist supervision.
If you are allergic and want to keep your Shih Tzu, Curex connects you with allergist-supervised immunotherapy for pet allergy aimed at reducing your sensitivity over a multi-year course. Keep expectations realistic: dog immunotherapy is far less proven than cat immunotherapy and offers no guarantee of relief. Take the quiz to find out whether you are a candidate.
Immunotherapy may provide long-term relief but is not a guaranteed cure; outcomes vary and treatment is prescribed after a board-certified allergist review.
How to live with a Shih Tzu if you are allergic
If you share your home with a Shih Tzu and experience allergy symptoms, the first instinct of many owners is to blame house dust or seasonal pollen — because the dog sheds so little visible hair. Do not assume the low shed means you are safe — confirm it with Curex at-home allergy testing, which measures your IgE to Can f 1, the major dog allergen, so you treat the actual trigger. The quiz is a good starting point. Once the Shih Tzu is confirmed as your trigger, the management plan addresses dander as the primary vector, with the grooming-release dynamic as the key challenge. Unlike short-coated breeds with constant passive dander dispersal, the Shih Tzu's allergen load is episodic — high during and immediately after grooming, lower between sessions. This pattern makes grooming hygiene the most important intervention.
- 01
Confirm the allergen trigger
Test for Can f 1 and Can f 5 specifically. Can f 5 from an intact male Shih Tzu may be part of your sensitization — component-resolved testing clarifies whether sex selection could reduce exposure without other changes.
- 02
Enforce a strict pet-free bedroom
Keep the Shih Tzu out of the bedroom and off the bed; wash bedding weekly in hot water above 130°F. A small dog distributes less dander than a large one, but the long coat carries trapped allergen that can transfer to surfaces.
- 03
Run HEPA air purifiers continuously
Place correctly sized HEPA units in shared rooms and the bedroom. Can f 1 from the Shih Tzu's long coat is released during grooming — run the purifier in the grooming area during and after brushing.
- 04
Delegate grooming to a non-allergic person
Daily brushing and professional clipping every 4-6 weeks release trapped allergen into the air. If you are allergic, have a non-allergic family member or a professional groomer handle all grooming. If you must groom the dog yourself, wear an N95 mask and run a HEPA purifier in the room.
- 05
Bathe the dog every one to two weeks
Regular bathing reduces surface Can f 1 significantly; airborne levels fall roughly 61 percent for several days following a wash (Hodson et al., JACI 1999). A small breed is easier to bathe at home — use a non-allergic family member or groomer for the task.
- 06
Replace carpet with hard flooring
Carpet under a long-coated dog accumulates dander from grooming sessions. Hard floors can be damp-mopped to remove settled Can f 1; the Shih Tzu's low shed means less accumulation than a heavy shedder, but the grooming-release dynamic makes this a worthwhile investment.
How it stacks up against other breeds
Scored on the same five-factor model, the Shih Tzu lands at 3.0 — in the Not hypoallergenic band — because its low-shed long double coat traps dander but requires daily grooming that releases it, and the normal Can f 1 production is not reduced by the coat type. The Havanese, a similar small long-coated breed in the D_everyday2 bundle, has an identical profile and score. The Poodle, a low-shed curly-coated breed, reaches 7.0 by having a coat that traps dander more effectively and requires less frequent grooming. No dog reaches a true 10 on this model.
| # | Breed | Verdict | Score |
|---|---|---|---|
| 1 | Standard Poodledog Low-shed curly coat traps dander effectively; still produces Can f 1 but disperses far less than the Shih Tzu's long double coat. | Moderately friendly | 7 |
| 2 | Bichon Frisedog Curly double coat, low shed, moderate grooming — the curly coat traps dander more effectively than the Shih Tzu's long straight coat. | Moderately friendly | 6.5 |
| 3 | Havanesedog Same small long-coated low-shed profile — the Cuban-breed counterpart to the Shih Tzu's Tibetan-breed framing. | Not hypoallergenic | 3 |
| 4 | Shih TzuThis breeddog Small long-coated companion; low shed (2/5) but high grooming (5/5) releases trapped dander; minimal drool (1/5). | Not hypoallergenic | 3 |
| 5 | Lhasa Apsodog Similar long-coated Tibetan breed with the same low-shed, high-grooming profile — the Shih Tzu's closest relative in this bundle. | Not hypoallergenic | 3 |
| 6 | Labrador Retrieverdog Dense double coat, AKC 4/5 heavy shedder — much higher dander dispersal than this small long-coated breed. | Not hypoallergenic | 2 |
Low-shed curly coat traps dander effectively; still produces Can f 1 but disperses far less than the Shih Tzu's long double coat.
Curly double coat, low shed, moderate grooming — the curly coat traps dander more effectively than the Shih Tzu's long straight coat.
Same small long-coated low-shed profile — the Cuban-breed counterpart to the Shih Tzu's Tibetan-breed framing.
Small long-coated companion; low shed (2/5) but high grooming (5/5) releases trapped dander; minimal drool (1/5).
Similar long-coated Tibetan breed with the same low-shed, high-grooming profile — the Shih Tzu's closest relative in this bundle.
Dense double coat, AKC 4/5 heavy shedder — much higher dander dispersal than this small long-coated breed.
Higher score = lower realistic allergen burden. No breed reaches a true 10 — every dog and cat still produces allergen.
Curex Hypoallergenic Score finder
Search any popular breed and see its honest Curex Hypoallergenic Score — 10 means the lowest realistic allergen burden, 1 the highest. No breed is truly allergen-free.
32 breeds
| # | Breed | Verdict | Score |
|---|---|---|---|
| 1 | Bichon Frisedog | Among the friendlier breeds | Score 8 out of 10 |
| 2 | Poodledog | Among the friendlier breeds | Score 8 out of 10 |
| 3 | Maltesedog | Moderately friendly | Score 7 out of 10 |
| 4 | Moderately friendly | Score 7 out of 10 | |
| 5 | Schnauzerdog | Moderately friendly | Score 7 out of 10 |
| 6 | Moderately friendly | Score 7 out of 10 | |
| 7 | Balinesecat | Moderately friendly | Score 6 out of 10 |
| 8 | Havanesedog | Moderately friendly | Score 6 out of 10 |
| 9 | Moderately friendly | Score 6 out of 10 | |
| 10 | Siberiancat | Moderately friendly | Score 6 out of 10 |
| 11 | Cavapoodog | Low-allergen at best | Score 5 out of 10 |
| 12 | Cockapoodog | Low-allergen at best | Score 5 out of 10 |
| 13 | Cornish Rexcat | Low-allergen at best | Score 5 out of 10 |
| 14 | Devon Rexcat | Low-allergen at best | Score 5 out of 10 |
| 15 | Goldendoodledog | Low-allergen at best | Score 5 out of 10 |
| 16 | Labradoodledog | Low-allergen at best | Score 5 out of 10 |
| 17 | Low-allergen at best | Score 5 out of 10 | |
| 18 | Sphynxcat | Low-allergen at best | Score 5 out of 10 |
| 19 | Beagledog | Low-allergen at best | Score 4 out of 10 |
| 20 | Bengalcat | Low-allergen at best | Score 4 out of 10 |
| 21 | Russian Bluecat | Low-allergen at best | Score 4 out of 10 |
| 22 | Boxerdog | Not hypoallergenic | Score 3 out of 10 |
| 23 | Not hypoallergenic | Score 3 out of 10 | |
| 24 | Not hypoallergenic | Score 3 out of 10 | |
| 25 | Ragdollcat | Not hypoallergenic | Score 3 out of 10 |
| 26 | Not hypoallergenic | Score 2 out of 10 | |
| 27 | Not hypoallergenic | Score 2 out of 10 | |
| 28 | Not hypoallergenic | Score 2 out of 10 | |
| 29 | Maine Cooncat | Not hypoallergenic | Score 2 out of 10 |
| 30 | Not hypoallergenic | Score 2 out of 10 | |
| 31 | Persiancat | Not hypoallergenic | Score 2 out of 10 |
| 32 | Not hypoallergenic | Score 2 out of 10 |
- Score 8 out of 10Among the friendlier breedsdog
- #2PoodleScore 8 out of 10Among the friendlier breedsdog
- #3MalteseScore 7 out of 10Moderately friendlydog
- Score 7 out of 10Moderately friendlydog
- Score 7 out of 10Moderately friendlydog
- Score 7 out of 10Moderately friendlydog
- #7BalineseScore 6 out of 10Moderately friendlycat
- #8HavaneseScore 6 out of 10Moderately friendlydog
- Score 6 out of 10Moderately friendlydog
- #10SiberianScore 6 out of 10Moderately friendlycat
- #11CavapooScore 5 out of 10Low-allergen at bestdog
- #12CockapooScore 5 out of 10Low-allergen at bestdog
- #13Cornish RexScore 5 out of 10Low-allergen at bestcat
- #14Devon RexScore 5 out of 10Low-allergen at bestcat
- #15GoldendoodleScore 5 out of 10Low-allergen at bestdog
- #16LabradoodleScore 5 out of 10Low-allergen at bestdog
- Score 5 out of 10Low-allergen at bestcat
- #18SphynxScore 5 out of 10Low-allergen at bestcat
- #19BeagleScore 4 out of 10Low-allergen at bestdog
- #20BengalScore 4 out of 10Low-allergen at bestcat
- #21Russian BlueScore 4 out of 10Low-allergen at bestcat
- #22BoxerScore 3 out of 10Not hypoallergenicdog
- Score 3 out of 10Not hypoallergenicdog
- Score 3 out of 10Not hypoallergenicdog
- #25RagdollScore 3 out of 10Not hypoallergeniccat
- Score 2 out of 10Not hypoallergenicdog
- Score 2 out of 10Not hypoallergenicdog
- Score 2 out of 10Not hypoallergenicdog
- #29Maine CoonScore 2 out of 10Not hypoallergeniccat
- Score 2 out of 10Not hypoallergeniccat
- #31PersianScore 2 out of 10Not hypoallergeniccat
- Score 2 out of 10Not hypoallergenicdog
Higher score = lower realistic allergen burden. Scores reflect coat type, shedding, and dander or Fel d 1 output — not a guarantee. Every dog and cat still produces allergen.
Frequently asked questions
Are Shih Tzus good for allergy sufferers?
No, despite the low-shedding coat. Shih Tzus score 3.0 out of 10 on the Hypoallergenic Score, placing them in the Not hypoallergenic band. The long double coat sheds little (AKC 2/5) but requires daily grooming that releases trapped dander into the air. The minimal drool (AKC 1/5) is not a significant factor. The ACAAI states that studies have not shown any dog can be hypoallergenic. People with mild, well-controlled dog allergy may manage with strict environmental controls and grooming delegated to a non-allergic person; those with moderate-to-severe allergy or allergic asthma should consult an allergist before adopting.
Do Shih Tzus shed a lot?
No, Shih Tzus are low shedders. The AKC rates the Shih Tzu a 2 out of 5 shedder — low on the scale. The long double coat traps loose hair and dander rather than releasing them freely into the environment. This is why the breed is often recommended for people who want less visible dog hair on furniture. For allergy purposes, however, the low shed is a mixed blessing: the trapped dander is released during daily grooming, which creates episodic allergen exposure.
Why isn't the Shih Tzu hypoallergenic if it sheds so little?
Because shedding volume and allergen production measure different things. Can f 1 — the major dog allergen — is produced in skin, saliva, and sebaceous glands by every dog regardless of coat length or shed rate. A low-shed coat reduces visible hair on furniture; it does not reduce the protein your immune system reacts to. The Shih Tzu's long double coat traps dander and loose hair, but daily grooming releases them into the air. Nicholas et al. (Am J Rhinol Allergy 2011) found detectable Can f 1 in 94.2 percent of homes regardless of the dog's coat type.
What hypoallergenic score does the Shih Tzu get?
The Shih Tzu scores 3.0 out of 10, placing it in the Not hypoallergenic band. The five-factor breakdown: allergen production 2/10 (40% weight; near-constant for all dogs), shedding 5/10 (20% weight; AKC 2/5 low shed), dander 3/10 (15% weight; small body limits total dander but grooming releases it), saliva spread 7/10 (15% weight; AKC 1/5 minimal drool), and groomability 2/10 (10% weight; AKC 5/5 high grooming, which releases trapped allergen). The Havanese has an identical score and profile.
Does neutering a male Shih Tzu reduce dog allergies?
For a minority of dog-allergic people, yes. Intact male dogs produce Can f 5, a prostatic kallikrein, in addition to Can f 1. Around 30 percent of dog-allergic patients are sensitized to Can f 5, and some react to it exclusively. Neutering eliminates the Can f 5 source, which can meaningfully reduce symptoms for monosensitized patients. For the majority sensitized to Can f 1 — present in every dog regardless of sex or neuter status — neutering makes no practical difference to allergen levels. Component-resolved IgE blood testing is the most efficient diagnostic step before making sex or management decisions.
How does the Shih Tzu compare to the Havanese for allergies?
The Shih Tzu and Havanese are a natural comparison — both are small, long-coated, low-shedding companion breeds with the same 3.0 score. The differentiators are the coat texture and origin: the Shih Tzu has a long double coat from Tibet, while the Havanese has a silky single coat from Cuba. Both require daily grooming that releases trapped dander. In practice, the allergen profile is nearly identical — the choice between them is a lifestyle and preference decision, not an allergy-management one.
Is the Shih Tzu better for allergies than the Labrador Retriever?
Yes, significantly. The Labrador Retriever has a dense double coat and an AKC shed rating of 4 out of 5 — a heavy shedder earning a score of 2.0. The Shih Tzu's low shed (2/5) and small body size earn it a 3.0. That difference reflects meaningfully lower dander dispersal from the Shih Tzu's long coat versus the Lab's double coat — the Shih Tzu releases less dander per day than a Lab. However, neither is appropriate for allergy sufferers without a comprehensive management plan, and both produce the same Can f 1 per unit of skin.
Can I reduce allergens from a Shih Tzu at home?
Yes, substantially. For a small long-coated low-shedding breed, the most effective measures are: keep the dog out of the bedroom, run HEPA air purifiers in shared rooms, replace carpet with hard flooring that can be damp-mopped, and delegate grooming to a non-allergic person or professional groomer. Dog washing cuts airborne Can f 1 by roughly 61 percent for several days (Hodson et al., JACI 1999). Between baths, wipe the coat with a damp cloth to remove loose dander and surface allergen. Wash hands after contact.
How does the Shih Tzu allergen profile differ from the Lhasa Apso?
Both are small, long-coated Tibetan breeds at 3.0 on the Hypoallergenic Score, sharing the coat-trap framing. The differentiators are the coat texture and temperament: the Shih Tzu has a long double coat with a soft texture, while the Lhasa Apso has a long double coat with a harder texture. Both require daily grooming that releases trapped dander. The allergen profile is nearly identical — the Lhasa Apso page owns the Tibetan-monastery framing; this page owns the palace-companion framing.
Can immunotherapy help me keep a Shih Tzu if I am allergic?
For some people, yes — with honest expectations for dog allergy. Allergen immunotherapy gradually retrains the immune system over a three-to-five-year course and is the only disease-modifying treatment. Cat-allergy immunotherapy has solid randomized trial support; dog-allergy immunotherapy is considerably weaker — a 2016 review in Annals of Allergy, Asthma & Immunology concluded that four decades of studies failed to produce clearly reproducible clinical evidence of effectiveness. Dog extracts are less standardized and the multi-allergen complexity of dog sensitization complicates treatment. Immunotherapy is not a cure, but for people with confirmed dog allergy not controlled by avoidance and medication, it is the rational next step under allergist supervision.
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Is the Westie Hypoallergenic? Wire Coat, Atopic Skin, and What the Science Says
No. The Westie scores 3.5/10 on the Hypoallergenic Score. Wire coat, atopic skin tendency, and Can f 1 — the wiry reputation doesn't hold up.
Read moreIs the Abyssinian Cat Hypoallergenic? Low-Shed Coat, Same Fel d 1
No. The Abyssinian scores 4.0/10 — low-shed single coat means less dander dispersal. But Fel d 1 production is the same as every other cat.
Read moreIs the American Polydactyl Cat Hypoallergenic? Extra Toes, Normal Allergens
No. The American Polydactyl scores 4.0/10 on the Hypoallergenic Score. Its moderate shedding and normal Fel d 1 production mean extra toes do not equal lower allergens.
Read moreIs the American Eskimo Dog Hypoallergenic? The Straightest White-Fluff Debunk
No. The American Eskimo Dog scores 3.5/10. Pure white, soft, and fluffy — but a double coat brushed 2–3x/week still blows seasonally and carries Can f 1. Full data inside.
Read moreIs the Akita Hypoallergenic? The Coat Blow Reality, Scored
No. The Akita scores 3.0/10 on the Hypoallergenic Score. Its large double coat blows twice yearly, flooding your home with allergen-laden dander.
Read moreIs the Wirehaired Pointing Griffon Hypoallergenic? The Lowest Score in the 'Hypoallergenic' Bundle
No. The Wirehaired Pointing Griffon scores 2.5/10 — the lowest in this marketed bundle. AKC 3/5 shedder AND 3/5 drooler. The most clearly mislabeled breed here.
Read moreNot sure it’s the dog? Find out for sure.
An at-home Curex test measures whether you’re truly sensitized to pet allergens. If you are, personalized immunotherapy can target the underlying immune response — so for many people, keeping the pet you love becomes realistic. No breed is fully hypoallergenic, but your allergies can be treated.
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This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. No dog or cat breed is fully hypoallergenic. Always consult a qualified healthcare provider about allergy symptoms. Content reviewed by board-certified allergists at Curex.