Sources and Methodology | The India Dog Health Report 2026

Read this first

Everyone who took part chose to: they are K9 Vitality customers, or dog owners who chose to take a quiz or answer a survey. That makes this a non-probability, opt-in sample. It is a large, detailed record of how these dogs and these families experience canine health. It is not a representative sample of India's dog population, and we do not present it as one.

Part oneWhere the data comes from

Five first-party datasets, collected from Indian dog owners between August 2023 and July 2026. Each figure in the report carries its own sample size at the point it appears.

Dataset	Sample	Window	How it was collected	What it supports
Customer reviews	455	Aug 2023 to Jun 2026	Reviews left voluntarily by customers on our review platform. Average rating 4.26 of 5. Of the 455, 158 carry a confirmed-purchase status on the platform; the rest are unconfirmed or unverified, and we count them all rather than showing only the verified subset.	Symptoms described, owner-reported timelines, breed patterns, quotations.
Health assessment quiz (combined)	3,089	Dec 2025 to Jul 2026	On-site self-assessment, completed by owners who chose to take it. Two generations of the same tool, split below.	Concerns, breed mix, joint age curve, recurrence, red flags, what owners had tried.
↳ earlier version, the Gut Health Score Calculator	2,722	Dec 2025 to Mar 2026	Focused on gut and skin, so respondents self-selected for those concerns.	Used only for the shape of gut and skin presentation, breed, recurrence and what owners tried. Never used to rank skin against joints or dental.
↳ current version, the Body Health Score quiz	367	Mar 2026 to Jul 2026	Full-taxonomy assessment covering all concern areas.	Concern ranking, the joint age switch, the red-flag rate, dental and weight gaps. Labelled where used.
Post-purchase surveys	6,832 responses from 5,815 people	May 2024 to Jul 2026	Sent to customers after purchase, across eight successive versions. Each statistic carries its own sample size, because each question ran on a different subset. The largest single question base is 3,904.	Improvement timelines (the 30-day figure uses 2,589 returning customers), experience scores, personas.
Shipment records	4,808 analysed 4,267 mapped	Trailing	Order destinations aggregated to region and pincode. 4,267 had a destination that could be mapped, reaching 748 towns and cities across 1,679 pincodes.	The geography of supplement-buying dogs in India.
Support conversations	244	to Jun 2026	Customer support and retention calls, reviewed for recurring themes.	Why owners continue, and why some stop.

Part twoEvery headline claim, and what backs it

Claim in the report	Evidence	Sample
Skin is the number one concern, at 41% of specific concerns	Full-body quiz	n = 367
Paw licking is the most common single complaint; noticed on paws first, then ears, then belly and folds	Gut and skin quiz	n = 2,722
Most owners had already tried something, most often vet medicines that helped and then stopped working	Gut and skin quiz	n = 2,477 answered
Skin and allergy symptoms were most often resolved by the gut product	Review analysis, symptoms tagged from review text	n = 455, 158 confirmed purchases
Dogs with atopic dermatitis show gut dysbiosis, replicated in three populations	Reference 1	three published studies
Probiotics have not yet been shown to significantly improve canine atopic dermatitis scores	Reference 11	meta-analysis of 5 trials
Early-life surfaces affect hip dysplasia risk: stairs before 3 months raise it, fleece whelping pools lower it	Reference 10	501-dog cohort; 5,649 guide dogs
Many breeds are predisposed to atopic dermatitis; prevalence depends on breed and region	Reference 2	veterinary literature
71% noticed improvement within 30 days; 53% within three weeks	Post-purchase survey	n = 2,589
Gut improvements are reported soonest (2 to 4 weeks); joints slowest (2 months or more)	Review timeframes	n = 113
Clinical evidence for probiotics in dogs is limited, so the 2 to 4 week gut figure is what owners told us rather than a trial result	Reference 4	systematic review
Glucosamine and chondroitin show significant improvement by day 70; vets set expectations at 8 to 12 weeks	References 3 and 5	randomised trial; veterinary literature
Joint concern has an age switch at four	Full-body quiz	n = 367
Up to 40% of dogs aged 8 months to 4 years have osteoarthritis, but signs are usually not identified until 5 to 13 years	Reference 5	veterinary literature
Puppies raised on slippery surfaces have a higher incidence of hip dysplasia and osteoarthritis	Reference 10	veterinary college guidance
Indian native and mixed-breed dogs are the single largest group	Quiz breed data	n = 2,228 with breed recorded
Golden Retriever hip dysplasia 53 to 73%; Labrador 15 to 31%	References 6 and 7	published prevalence studies
26% of assessments surfaced a red flag; supplements were blocked and a vet referral shown	Full-body quiz	n = 367
Up to 80% of dogs have periodontal disease by age two; dental was named by 9% of the owners who gave a specific concern, which is 7% of all full-body quizzes	Reference 8 + quiz	veterinary literature; n = 266 of 367
Obesity is the most common nutritional disorder, with 59% of US dogs overweight; weight was named by 8% of the owners who gave a specific concern, which is 6% of all full-body quizzes	Reference 9 + quiz	veterinary literature, US estimate; n = 266 of 367
66% say the problem improves then returns; only 8% say it stays fixed	Gut and skin quiz	n = 2,478 answered
Delhi NCR is the largest cluster, then Bengaluru, then Mumbai	Shipment records	n = 4,267 mapped
Health-conscious, research-driven owners are the largest self-described group at 40%; senior-dog and first-time parents each about 34%	Post-purchase survey	n = 872, more than one answer allowed
56% name a vet or doctor as where they turn for dog advice, against 27% naming internet, social media, friends and family combined	Post-purchase survey	n = 569, free text grouped
About 27% had tried nothing at all before K9 Vitality	Post-purchase survey	n = 808, free text grouped
Ingredient quality is the most common answer on what dog brands get wrong	Post-purchase survey	n = 224, free text grouped

Part threeThe veterinary literature we cite

Every reference below was re-checked against the original paper in July 2026, including what each study actually found. Links go to the source.

Thomsen M, Künstner A, et al. (2023). A comprehensive analysis of gut and skin microbiota in canine atopic dermatitis in Shiba Inu dogs. Microbiome. PubMed 37864204 Found: dysbiosis of both gut and skin in affected dogs, with Fusobacteria and Megamonas depleted. A single-breed study, so we checked whether it replicates. It does. Rostaher A, et al. (2022), Animals 12:2377, PubMed 36139237: atopic beagles had significantly lower gut alpha-diversity than healthy dogs (p=0.033). Song H, et al. (2025), BMC Microbiology 25:228, PubMed 40264044: lower gut diversity again, clinical severity negatively correlated with diversity and with the abundance of Fusobacterium and Megamonas, the same two genera Thomsen identified independently.
Canine atopic dermatitis, breed predisposition. Merck Veterinary Manual. States that many breeds are predisposed and that prevalence within a breed depends on the genetic pool and geographical region. It gives no single overall prevalence figure. An earlier draft of this report quoted 10 to 15 percent against this source; that figure is not in it and has been removed.
McCarthy G, et al. (2007). Randomised double-blind, positive-controlled trial to assess the efficacy of glucosamine/chondroitin sulfate for the treatment of dogs with osteoarthritis. The Veterinary Journal. PubMed 16647870 / doi:10.1016/j.tvjl.2006.02.015 Found: statistically significant improvement in pain, weight-bearing and severity by day 70.
Jensen AP, Bjørnvad CR (2019). Clinical effect of probiotics in prevention or treatment of gastrointestinal disease in dogs: a systematic review. Journal of Veterinary Internal Medicine. PubMed 31313372 / doi:10.1111/jvim.15554 Found: across 17 studies, the evidence for probiotics in canine gastrointestinal disease is limited, and the review concluded any effect may be clinically unimportant. We cite it for the state of the evidence, not as proof of benefit.
Osteoarthritis in dogs, prevalence and timeline. Merck Veterinary Manual. States that up to 40% of dogs aged 8 months to 4 years have osteoarthritis, while clinical signs are generally not identified until 5 to 13 years of age. This is why section three describes an age curve of owner concern, not of disease onset.
Paster ER, et al. (2005). Estimates of prevalence of hip dysplasia in Golden Retrievers and Rottweilers and the influence of bias on published prevalence figures. JAVMA. PubMed 15702688 / doi:10.2460/javma.2005.226.387 Found: hip dysplasia prevalence in Golden Retrievers ranged from 53% to 73%. The authors show that Orthopedic Foundation for Animals registry figures run lower because normal-looking radiographs are far more likely to be submitted, so the higher range is the better estimate.
Ohlerth S, et al. (1998). Epidemiologic and genetic studies of canine hip dysplasia in a population of Labrador Retrievers: a study over 25 years. Deutsche Tierärztliche Wochenschrift. PubMed 9818525 Found: overall hip dysplasia prevalence of 31.3% across 738 Labradors, measured over 25 years in a single breeding population. Prevalence fell from 57.9% in 1972 to 1980 to 14.9% in 1991 to 1996 as breeding selection improved, which is why the report gives a range rather than the 25-year average alone.
Periodontal disease in small animals. Merck Veterinary Manual. States that up to 80% of dogs have some level of periodontal disease by age 2, and that it has been associated with an increased risk of chronic azotemic kidney disease. It does not claim a link to heart or liver disease, so we no longer state one.
Canine obesity. Merck Veterinary Manual; lifespan effect from Kealy et al. (2002), JAVMA. PubMed 11991408 Merck: the most common nutritional disorder in small animal medicine, with an estimated 59% of US dogs overweight or obese as of 2022. Kealy: a lifetime paired-feeding study in 48 Labrador Retrievers, funded by Nestle Purina, where 25% food restriction significantly increased median lifespan. It tests leanness rather than obesity directly, and is a single-breed colony.
Pacheco RCF, et al. (2025). Probiotics as an adjunct in the treatment of canine atopic dermatitis: a systematic review and meta-analysis of in vivo studies in dogs. Journal of Veterinary Medical Science 87:1068-1077. PubMed 40603066 Found: across five eligible trials, no statistically significant effect on the CADESI-4 (p=0.08) or PVAS (p=0.85) scales, although all five trials showed a reduction in severity. We cite this so the report does not imply a proven treatment effect. It replaces our earlier use of a systematic review of probiotics for gastrointestinal disease, which measured a different endpoint and was the wrong evidence for a claim about skin.
American College of Veterinary Surgeons. Osteoarthritis in Dogs. acvs.org States that puppies on slippery surfaces during development have a higher incidence of hip dysplasia and osteoarthritis. A developmental risk factor, not a treatment for established disease. Two primary studies support it. Krontveit RI, et al. (2012), American Journal of Veterinary Research 73:838-846, PubMed 22620698: in a prospective cohort of 501 dogs, access to stairs from birth to 3 months increased hip dysplasia risk, while off-lead exercise on soft ground decreased it. Feng LC, et al. (2025), Animals 15:152, PubMed 39858152: among 5,649 guide dogs, fleece-lined whelping pools in the first three weeks were associated with a lower rate of hip dysplasia than newspaper-lined pools. For non-pharmaceutical management of established disease, see Pye C, et al. (2024), Journal of Small Animal Practice 65:3-23, PubMed 37776028.

Part fourMethodology and limitations

How to read these numbers

We report figures as a share of the dogs or owners in this dataset, never as a share of India's dogs.
We claim no margin of error and no confidence interval. Neither is valid for an opt-in sample. The figures are directional.
The earlier gut and skin quiz self-selected for itch and gut concerns. We therefore use it only to describe how gut and skin problems present, never to rank skin against joints or dental.
All health outcomes are reported by owners, not clinically measured. They describe what owners observed, which can include normal fluctuation and expectation effects.
Observational data shows association, not causation. Where the report describes what owners saw, it is written as observation, not proof of effect.
Several survey questions were free text, not multiple choice. Where the report gives a percentage for one of those, we grouped the written answers into themes by hand and label it at the point of use. Treat those figures as indicative rather than precise. Where a question allowed more than one answer, we count the share of respondents who chose each option, so the shares add to more than 100%.

Funding and conflict of interest

This report was designed, conducted and funded by K9 Vitality, a company that sells dog supplements related to some of these findings. The data comes from K9's own customers and audience. We state this plainly because a reader deserves to weigh it.

Medical review

Every medical statement and prevalence figure was reviewed by Dr. Jasleen Kaur, BVSc, a practising veterinarian (Allpets Clinic and Beyond, Hyderabad). This report is clinically reviewed. It is not peer-reviewed: no independent journal reviewed it, and we do not describe it as though one did.

Data and privacy

Only aggregate, anonymised figures are published. No individual dog or owner is identifiable beyond a name they chose to publish themselves, such as on a public review. Families featured with photographs are contacted for consent before publication. Our handling follows the principles of India's Digital Personal Data Protection Act, 2023: consent, purpose limitation and data minimisation.

Corrections

Before publication we re-checked every citation against its original paper and corrected the statements that claimed more than their source supported. Three are worth naming: the atopic dermatitis study is a single-breed study and is now described as one, the Labrador hip dysplasia figure is now given as a range because prevalence in the cited population halved over the study period, and the flooring evidence is a developmental risk factor rather than a treatment recommendation. We will correct any further error brought to our attention and note it here. Figures reflect data available as of July 2026 and will be refreshed annually.

How to cite this report
K9 Vitality (2026). The India Dog Health Report 2026. India: K9 Vitality. Available at k9vitality.in.

Questions, or want to check something

If you are a journalist, veterinarian or researcher and want to verify a figure, or want more detail on how a number was derived, write to hello@k9vitality.in and we will answer.