Useful dog-health guidance. No scare stories.
Version 1.0.0 · published 5 August 2026
Food allergy affects roughly 1 to 2% of dogs seen by a vet, and 9 to 50% of dogs already diagnosed with atopic dermatitis. Those are not UK population figures. Every number below states exactly who was counted and links to the study behind it.
Dogs seen by a vet
1–2%
Source DOIDogs with atopic dermatitis
9–50%
Source DOIA UK study
Not found
Why we left it blankThis is a reference dataset for people who need a traceable figure, not a diagnostic tool or a prevalence estimate for every dog in the UK. The underlying studies are largely international veterinary and referral populations. A percentage without its denominator would make those studies look more certain than they are, so we do not publish one.
The reference table
Filter by topic or confidence grade. The table starts with every row visible, including for readers without JavaScript.
Showing 11 of 11 figures.
| Figure | Denominator and finding | Study and source | Confidence |
|---|---|---|---|
| 1–2%prevalence | Dogs brought to a vet for any reasonEstimated prevalence of cutaneous adverse food reactions in this population.Sample: 22 canine studies (critically appraised topic) | Olivry & Mueller (2017)Critically appraised topicdoi:10.1186/s12917-017-0973-z | well-evidenced |
| 9–50%prevalence | Dogs already diagnosed with atopic dermatitisEstimated prevalence of cutaneous adverse food reactions in this selected population.Sample: 22 canine studies (critically appraised topic) | Olivry & Mueller (2017)Critically appraised topicdoi:10.1186/s12917-017-0973-z | well-evidenced |
| 172 of 843 (about 20%)prevalence | Dogs with atopic dermatitis in one prospective cohortDogs classified with food-induced atopic dermatitis in this cohort.Sample: 843 dogs with atopic dermatitis; 1,096 pruritic dogs enrolled | Favrot et al. (2010)Prospective multicentre observational studydoi:10.1111/j.1365-3164.2009.00758.x | well-evidenced |
| Beef, dairy, chicken, then wheatreported food sources | Confirmed cutaneous adverse food-reaction casesMost commonly reported food sources, in rank order. This is not population risk or inherent allergenicity.Sample: 297 dogs pooled across studies | Mueller, Olivry & Prélaud (2016)Critically appraised topicdoi:10.1186/s12917-016-0633-8 | well-evidenced |
| 14 of 297 (about 5%)reported food sources | Confirmed cutaneous adverse food-reaction casesReported lamb cases. This does not establish lamb as a population risk.Sample: 297 dogs pooled across studies | Mueller, Olivry & Prélaud (2016)Critically appraised topicdoi:10.1186/s12917-016-0633-8 | well-evidenced |
| About 4%; eighth on the listreported food sources | Confirmed cutaneous adverse food-reaction casesReported egg cases and rank. This is not evidence that egg is safe for an individual dog.Sample: 297 dogs pooled across studies | Mueller, Olivry & Prélaud (2016)Critically appraised topicdoi:10.1186/s12917-016-0633-8 | well-evidenced |
| More than 80% by week 5diet trial | Dogs on an elimination diet in the included studiesComplete remission of signs by week 5 in the reviewed studies.Sample: Pooled remission data; no single published denominator | Olivry, Mueller & Prélaud (2015)Critically appraised topicdoi:10.1186/s12917-015-0541-3 | well-evidenced |
| More than 90% by week 8diet trial | Dogs on an elimination diet in the included studiesComplete remission of signs by week 8 in the reviewed studies; the review recommends at least 8 weeks to identify more than 90% of cases.Sample: Pooled remission data; no single published denominator | Olivry, Mueller & Prélaud (2015)Critically appraised topicdoi:10.1186/s12917-015-0541-3 | well-evidenced |
| Up to 50%hydrolysed diets | Sensitised dogs fed a partial hydrolysate made from a protein they reacted toDogs that worsened in the included controlled studies. Hydrolysis can reduce allergenicity but does not eliminate it in every sensitised dog.Sample: 3 controlled studies within an 11-study systematic review | Olivry & Bizikova (2010)Systematic reviewdoi:10.1111/j.1365-3164.2009.00761.x | well-evidenced |
| 825 dogs across 22 articlessignalment | Dogs with adverse food reactions in the included articlesCases occurred across breeds and ages. Breed findings varied substantially between studies, so they are a weak signal rather than a prediction rule.Sample: 825 dogs; 22 articles | Olivry & Mueller (2019)Critically appraised topicdoi:10.1186/s12917-019-1880-2 | mixed evidence |
| Prior exposure is the normexposure history | Dogs with adverse food reactions described in the reviewDogs usually eat a food for a long period before reacting to it, so a food that has been in the bowl for years is not exonerated by familiarity. This is the counter-intuitive point owners most often get wrong when they rule out the long-standing food first.Sample: Narrative review of the canine and feline literature | Verlinden, Hesta, Millet & Janssens (2006)Narrative reviewdoi:10.1080/10408390591001117 | well-evidenced |
Published evidence gaps
These are useful questions. They are not useful answers until the evidence supports a denominator and a source that a reader can check.
The locked review supports their rank order, but its evidence note explicitly says not to reconstruct further per-food percentages without the full table in front of you. We publish the verified order rather than repeat a number we cannot audit here.
The available figures are from international veterinary and referral populations. We found no UK population-prevalence study to support a UK percentage.
Novel-protein logic is plausible, but no clinical feeding trial in confirmed food-allergic dogs establishes this figure. A possible mechanism is not a dataset value.
Published studies use different populations and definitions. We did not find one denominator that makes a single percentage honest enough to publish here.
A fair question
That is why this dataset distinguishes a documented figure from a commercially convenient one. In particular, it does not claim insect protein is clinically hypoallergenic for confirmed food-allergic dogs because that trial has not been done.
Where to go next
If you arrived here because of a dog with ongoing symptoms, read what the signs can and cannot mean, then use a vet-agreed process rather than choosing a food from a statistic.
Cite as: Some Grub (2026). UK Dog Food Allergy Data, version 1.0.0. https://somegrub.co.uk/tools/dog-food-allergy-data. Accessed [date].
Published 2026-08-05. Next scheduled evidence review: 2027-02-05. Changelog: version 1.0.0 is the first public release, containing 11 verified figures and 4 published evidence gaps.