Demography, common disorders and mortality of Shih Tzu dogs under primary veterinary care in the UK.

Breed Dog EPR Electronic patient record Epidemiology Pedigree Primary-care Purebred Shih Tzu VetCompass Veterinary

Journal

Canine medicine and genetics
ISSN: 2662-9380
Titre abrégé: Canine Med Genet
Pays: England
ID NLM: 101763636

Informations de publication

Date de publication:
24 Jan 2024
Historique:
received: 18 08 2023
accepted: 20 11 2023
medline: 24 1 2024
pubmed: 24 1 2024
entrez: 23 1 2024
Statut: epublish

Résumé

Shih Tzus are a popular dog breed in the UK although there is relatively little reported information on their health. This study aimed to characterise the demography, common disorders and mortality of Shih Tzus under primary veterinary care during 2016 in the UK using de-identified clinical records from the VetCompass™ Programme. The study population of 336,865 dogs under veterinary care during 2016 included 11,082 Shih Tzus (3.3%). The median age was 4.1 years (IQR: 2.1-7.1, range: 0.3-20.4) and mean adult bodyweight was 7.9 kg (SD: 1.9 kg). Annual proportional births increased from 2.2% of all dog births in 2005 to 3.8% in 2013, dropping to 3.3% by 2016. From a random subset of 2,423 Shih Tzus that had information extracted on disorders diagnosed during 2016, the most prevalent fine-level precision disorders were periodontal disease (n = 229, prevalence 9.5%, 95% CI: 8.4-10.7), anal sac impaction (180, 7.4%, 95% CI: 6.5-8.5) and ear disorders (134, 5.5%, 95% CI: 4.7-6.5). The most prevalent grouped-level precision disorders were cutaneous (n = 402, prevalence: 16.6%, 95% CI: 15.2-18.1), dental (322, 13.3%, 95% CI: 12.0-14.7), and ophthalmological (289, 11.9%, 95% CI: 10.7-13.3). Males were more likely than females to be diagnosed with skin disorders (P = 0.007) and musculoskeletal disorders (P = 0.010) while females were more likely than males to be diagnosed with hernias (P = 0.005). The median age of death was 12.7 years (IQR 8.7-14.3, range 2.0-19.9) and did not differ statistically between males and females. The most common grouped causes of death were enteropathy (7.9%, 95% CI: 3.9-15.4), heart disease (7.9%, 95% CI: 3.9-15.4) and poor quality of life (7.9%, 95% CI: 3.9-15.4). Periodontal disease, anal sac impaction and ear disorders were identified as common health issues. Shih Tzus had higher prevalence of anal sac impaction, umbilical hernias and eye problems than reported previously in dogs overall, suggesting potential predispositions. Shih Tzus appear to be relatively long-lived compared to previous reports of lifespan in dogs overall. The results can inform veterinarians and owners on priority disorders for monitoring to protect welfare. Oral hygiene was highlighted as a healthcare priority. The Shih Tzu is a popular small breed of dog in the UK. However, there is little information on common health conditions affecting this breed. This study aimed to describe the demography, common disorders, and causes of death of Shih Tzus in the UK in 2016 using the VetCompass™ Programme, which holds a database of anonymized clinical records of dogs attending primary-care veterinary practices in the UK.The study included 11,082 Shih Tzus (3.3%) from 336,865 dogs under veterinary care in the UK in VetCompass™ in 2016. The popularity of the Shih Tzu increased slightly from 2005 to 2013 but showed signs of decline towards 2016. The average age of Shih Tzus in the study was 4.1 years and the average adult bodyweight was 7.9 kg. The most common disorders affecting Shih Tzus in the study were periodontal disease (inflammation of the gums and tissue around the teeth, affecting 9.5% of Shih Tzus), anal sac impaction (7.4%) and ear disorders (5.5%). Male Shih Tzus were more likely than females to have skin and musculoskeletal disorders (conditions affecting bones, muscles and joints), while female Shih Tzus were more likely be diagnosed with hernias (when internal tissues push out through weakened muscle tissues). Shih Tzus had higher prevalence of anal sac impaction, umbilical hernias and eye problems than previously reported in dogs overall, suggesting potential predispositions. The average age at death of Shih Tzus was 12.7 years of age and the most common causes of death were enteropathy (gastrointestinal diseases causing signs such as diarrhoea and vomiting, 7.9%), heart disease (7.9%) and poor quality of life (7.9%).This study demonstrated the value of analysis of veterinary clinical records to increase our understanding of common health problems affecting dogs in the UK. The results can help both current and prospective Shih Tzu owners, and veterinarians, in prioritising preventative healthcare for Shih Tzus. For example, the most common disorder in Shih Tzus was periodontal disease, suggesting that increased preventative dental checkups and toothbrushing could improve welfare, especially if implemented from an early age.

Sections du résumé

BACKGROUND BACKGROUND
Shih Tzus are a popular dog breed in the UK although there is relatively little reported information on their health. This study aimed to characterise the demography, common disorders and mortality of Shih Tzus under primary veterinary care during 2016 in the UK using de-identified clinical records from the VetCompass™ Programme.
RESULTS RESULTS
The study population of 336,865 dogs under veterinary care during 2016 included 11,082 Shih Tzus (3.3%). The median age was 4.1 years (IQR: 2.1-7.1, range: 0.3-20.4) and mean adult bodyweight was 7.9 kg (SD: 1.9 kg). Annual proportional births increased from 2.2% of all dog births in 2005 to 3.8% in 2013, dropping to 3.3% by 2016. From a random subset of 2,423 Shih Tzus that had information extracted on disorders diagnosed during 2016, the most prevalent fine-level precision disorders were periodontal disease (n = 229, prevalence 9.5%, 95% CI: 8.4-10.7), anal sac impaction (180, 7.4%, 95% CI: 6.5-8.5) and ear disorders (134, 5.5%, 95% CI: 4.7-6.5). The most prevalent grouped-level precision disorders were cutaneous (n = 402, prevalence: 16.6%, 95% CI: 15.2-18.1), dental (322, 13.3%, 95% CI: 12.0-14.7), and ophthalmological (289, 11.9%, 95% CI: 10.7-13.3). Males were more likely than females to be diagnosed with skin disorders (P = 0.007) and musculoskeletal disorders (P = 0.010) while females were more likely than males to be diagnosed with hernias (P = 0.005). The median age of death was 12.7 years (IQR 8.7-14.3, range 2.0-19.9) and did not differ statistically between males and females. The most common grouped causes of death were enteropathy (7.9%, 95% CI: 3.9-15.4), heart disease (7.9%, 95% CI: 3.9-15.4) and poor quality of life (7.9%, 95% CI: 3.9-15.4).
CONCLUSIONS CONCLUSIONS
Periodontal disease, anal sac impaction and ear disorders were identified as common health issues. Shih Tzus had higher prevalence of anal sac impaction, umbilical hernias and eye problems than reported previously in dogs overall, suggesting potential predispositions. Shih Tzus appear to be relatively long-lived compared to previous reports of lifespan in dogs overall. The results can inform veterinarians and owners on priority disorders for monitoring to protect welfare. Oral hygiene was highlighted as a healthcare priority.
The Shih Tzu is a popular small breed of dog in the UK. However, there is little information on common health conditions affecting this breed. This study aimed to describe the demography, common disorders, and causes of death of Shih Tzus in the UK in 2016 using the VetCompass™ Programme, which holds a database of anonymized clinical records of dogs attending primary-care veterinary practices in the UK.The study included 11,082 Shih Tzus (3.3%) from 336,865 dogs under veterinary care in the UK in VetCompass™ in 2016. The popularity of the Shih Tzu increased slightly from 2005 to 2013 but showed signs of decline towards 2016. The average age of Shih Tzus in the study was 4.1 years and the average adult bodyweight was 7.9 kg. The most common disorders affecting Shih Tzus in the study were periodontal disease (inflammation of the gums and tissue around the teeth, affecting 9.5% of Shih Tzus), anal sac impaction (7.4%) and ear disorders (5.5%). Male Shih Tzus were more likely than females to have skin and musculoskeletal disorders (conditions affecting bones, muscles and joints), while female Shih Tzus were more likely be diagnosed with hernias (when internal tissues push out through weakened muscle tissues). Shih Tzus had higher prevalence of anal sac impaction, umbilical hernias and eye problems than previously reported in dogs overall, suggesting potential predispositions. The average age at death of Shih Tzus was 12.7 years of age and the most common causes of death were enteropathy (gastrointestinal diseases causing signs such as diarrhoea and vomiting, 7.9%), heart disease (7.9%) and poor quality of life (7.9%).This study demonstrated the value of analysis of veterinary clinical records to increase our understanding of common health problems affecting dogs in the UK. The results can help both current and prospective Shih Tzu owners, and veterinarians, in prioritising preventative healthcare for Shih Tzus. For example, the most common disorder in Shih Tzus was periodontal disease, suggesting that increased preventative dental checkups and toothbrushing could improve welfare, especially if implemented from an early age.

Autres résumés

Type: plain-language-summary (eng)
The Shih Tzu is a popular small breed of dog in the UK. However, there is little information on common health conditions affecting this breed. This study aimed to describe the demography, common disorders, and causes of death of Shih Tzus in the UK in 2016 using the VetCompass™ Programme, which holds a database of anonymized clinical records of dogs attending primary-care veterinary practices in the UK.The study included 11,082 Shih Tzus (3.3%) from 336,865 dogs under veterinary care in the UK in VetCompass™ in 2016. The popularity of the Shih Tzu increased slightly from 2005 to 2013 but showed signs of decline towards 2016. The average age of Shih Tzus in the study was 4.1 years and the average adult bodyweight was 7.9 kg. The most common disorders affecting Shih Tzus in the study were periodontal disease (inflammation of the gums and tissue around the teeth, affecting 9.5% of Shih Tzus), anal sac impaction (7.4%) and ear disorders (5.5%). Male Shih Tzus were more likely than females to have skin and musculoskeletal disorders (conditions affecting bones, muscles and joints), while female Shih Tzus were more likely be diagnosed with hernias (when internal tissues push out through weakened muscle tissues). Shih Tzus had higher prevalence of anal sac impaction, umbilical hernias and eye problems than previously reported in dogs overall, suggesting potential predispositions. The average age at death of Shih Tzus was 12.7 years of age and the most common causes of death were enteropathy (gastrointestinal diseases causing signs such as diarrhoea and vomiting, 7.9%), heart disease (7.9%) and poor quality of life (7.9%).This study demonstrated the value of analysis of veterinary clinical records to increase our understanding of common health problems affecting dogs in the UK. The results can help both current and prospective Shih Tzu owners, and veterinarians, in prioritising preventative healthcare for Shih Tzus. For example, the most common disorder in Shih Tzus was periodontal disease, suggesting that increased preventative dental checkups and toothbrushing could improve welfare, especially if implemented from an early age.

Identifiants

pubmed: 38263229
doi: 10.1186/s40575-023-00135-y
pii: 10.1186/s40575-023-00135-y
doi:

Types de publication

Journal Article

Langues

eng

Pagination

2

Informations de copyright

© 2024. The Author(s).

Références

The Kennel Club. Breed Information Centre: Shih Tzu 2022 [Available from: https://www.thekennelclub.org.uk/search/breeds-a-to-z/breeds/utility/shih-tzu/ .
Rover. The UK’s Most Popular Dog Breeds 2021 2021 [Available from: https://www.rover.com/uk/blog/most-popular-dog-breeds/ .
The Kennel Club. 10 Yearly Breed Statistics: Utility 2022 [Available from: https://www.thekennelclub.org.uk/media-centre/breed-registration-statistics/ .
The Kennel Club. Quarterly registration statistics for the Utility group. 2023.
O’Neill DG, Church DB, McGreevy PD, Thomson PC, Brodbelt DC. Longevity and mortality of owned dogs in England. Vet J. 2013;198(3):638–43.
pubmed: 24206631 doi: 10.1016/j.tvjl.2013.09.020
Teng KT-y, Brodbelt DC, Pegram C, Church DB, O’Neill DG. Life tables of annual life expectancy and mortality for companion dogs in the United Kingdom. Sci Rep. 2022;12(1):6415.
pubmed: 35484374 pmcid: 9050668 doi: 10.1038/s41598-022-10341-6
Wiles BM, Llewellyn-Zaidi AM, Evans KM, O’Neill DG, Lewis TW. Large-scale survey to estimate the prevalence of disorders for 192 Kennel Club registered breeds. Canine Genet Epidemiol. 2017;4(1):8.
pubmed: 28932406 pmcid: 5604186 doi: 10.1186/s40575-017-0047-3
Priester WA. Canine intervertebral disc Disease — occurrence by age, breed, and sex among 8,117 cases. Theriogenology. 1976;6(2):293–303.
doi: 10.1016/0093-691X(76)90021-2
Bowden DG, Outerbridge CA, Kissel MB, Baron JN, White SD. Canine demodicosis: a retrospective study of a veterinary hospital population in California, USA (2000–2016). Vet Dermatol. 2018;29(1):19–e10.
pubmed: 28868794 doi: 10.1111/vde.12484
O’Neill DG, Turgoose E, Church DB, Brodbelt DC, Hendricks A. Juvenile-onset and adult-onset demodicosis in dogs in the UK: prevalence and breed associations. J Small Anim Pract. 2020;61(1):32–41.
pubmed: 31584708 doi: 10.1111/jsap.13067
O’Neill DG, Hendricks A, Phillips JA, Brodbelt DC, Church DB, Loeffler A. Non-neoplastic anal sac disorders in UK dogs: epidemiology and management aspects of a research-neglected syndrome. Vet Rec. 2021;189(2):e203.
pubmed: 33645764 doi: 10.1002/vetr.203
The Kennel Club. Breed Standards; Shih Tzu 2016 [Available from: https://www.thekennelclub.org.uk/breed-standards/utility/shih-tzu/ .
Packer RM, Tivers MS. Strategies for the management and prevention of conformation-related respiratory disorders in brachycephalic dogs. Vet Med (Auckl). 2015;6:219–32.
pubmed: 30101109
O’Neill DG, Rowe D, Brodbelt DC, Pegram C, Hendricks A. Ironing out the wrinkles and folds in the epidemiology of skin fold dermatitis in dog breeds in the UK. Sci Rep. 2022;12(1):10553.
doi: 10.1038/s41598-022-14483-5
Ladlow J, Liu N-C, Kalmar L, Sargan D. Brachycephalic obstructive airway syndrome. Vet Rec. 2018;182(13):375–8.
pubmed: 29599258 doi: 10.1136/vr.k1403
Ekenstedt KJ, Crosse KR, Risselada M. Canine brachycephaly: anatomy, Pathology, Genetics and Welfare. J Comp Pathol. 2020;176:109–15.
pubmed: 32359622 pmcid: 7380493 doi: 10.1016/j.jcpa.2020.02.008
Kaswan RL, Salisbury MA. A New Perspective on canine keratoconjunctivitis sicca: treatment with ophthalmic cyclosporine. veterinary clin North America: Small Anim Pract. 1990;20(3):583–613.
doi: 10.1016/S0195-5616(90)50052-2
O’Neill DG, Yin Y, Tetas Pont R, Brodbelt DC, Church DB, Pegram C, et al. Breed and conformational predispositions for prolapsed nictitating membrane gland (PNMG) in dogs in the UK: a VetCompass study. PLoS ONE. 2022;17(1):e0260538.
pubmed: 35081121 pmcid: 8791520 doi: 10.1371/journal.pone.0260538
Packer RMA, Hendricks A, Burn CC. Impact of facial conformation on Canine Health: corneal ulceration. PLoS ONE. 2015;10(5):e0123827.
pubmed: 25969983 pmcid: 4430292 doi: 10.1371/journal.pone.0123827
O’Neill DG, Lee MM, Brodbelt DC, Church DB, Sanchez RF. Corneal ulcerative disease in dogs under primary veterinary care in England: epidemiology and clinical management. Canine Genet Epidemiol. 2017;4(1):5.
pubmed: 28630713 pmcid: 5471714 doi: 10.1186/s40575-017-0045-5
Kim JY, Won HJ, Jeong S. A retrospective study of ulcerative keratitis in 32 dogs. Inte J App Res Vet Med. 2009;7:27–31.
Packer RMA, Hendricks A, Burn CC. Do dog owners perceive the clinical signs related to conformational inherited disorders as ‘normal’ for the breed? a potential constraint to improving canine welfare. Anim Welf. 2012;21(1):81–93.
doi: 10.7120/096272812X13345905673809
Starling MJ, Branson N, Thomson PC, McGreevy PD. Boldness in the domestic dog differs among breeds and breed groups. Behav Process. 2013;97:53–62.
doi: 10.1016/j.beproc.2013.04.008
O’Neill DG, Packer RMA, Lobb M, Church DB, Brodbelt DC, Pegram C. Demography and commonly recorded clinical conditions of chihuahuas under primary veterinary care in the UK in 2016. BMC Vet Res. 2020;16(1):42.
pubmed: 32046714 pmcid: 7014602 doi: 10.1186/s12917-020-2258-1
O’Neill DG, Butcher C, Church DB, Brodbelt DC, Gough AG. Miniature schnauzers under primary veterinary care in the UK in 2013: demography, mortality and disorders. Canine Genet Epidemiol. 2019;6(1):1.
pubmed: 30783533 pmcid: 6376765 doi: 10.1186/s40575-019-0069-0
Sebbag L, Silva APSM, Santos ÁPB, Raposo ACS, Oriá AP. An eye on the Shih Tzu dog: Ophthalmic examination findings and ocular surface diagnostics. Vet Ophthalmol. 2022;n/a(n/a).
O’Neill DG, Church DB, McGreevy PD, Thomson PC, Brodbelt DC. Approaches to canine health surveillance. Canine Genet Epidemiol. 2014;1(1):2.
pubmed: 26401319 pmcid: 4574389 doi: 10.1186/2052-6687-1-2
Asher L, Buckland EL, Phylactopoulos CI, Whiting MC, Abeyesinghe SM, Wathes CM. Estimation of the number and demographics of companion dogs in the UK. BMC Vet Res. 2011;7(1):74.
pubmed: 22112367 pmcid: 3305510 doi: 10.1186/1746-6148-7-74
VetCompass. VetCompass Programme London: RVC Electronic Media Unit; 2023 [Available from: http://www.rvc.ac.uk/VetCOMPASS/ .
The VeNom Coding Group. VeNom Veterinary Nomenclature: VeNom Coding Group. ; 2022 [Available from: http://venomcoding.org .
Pearce N. Classification of epidemiological study designs. Int J Epidemiol. 2012;41(2):393–7.
pubmed: 22493323 doi: 10.1093/ije/dys049
Epi Info CDC, Centers for Disease Control and Prevention (US). : Epi Info Atlanta, Georgia: CDC; 2022 [Available from: https://www.cdc.gov/epiinfo/index.html .
O’Neill DG, Church DB, McGreevy PD, Thomson PC, Brodbelt DC. Prevalence of disorders recorded in dogs attending primary-care veterinary practices in England. PLoS ONE. 2014;9(3):1–16.
doi: 10.1371/journal.pone.0090501
Kirkwood BR, Sterne JAC. Essential medical statistics. 2nd ed. Oxford: Blackwell Science; 2003.
Agresti A, Coull BA. Approximate is better than exact for interval estimation of binomial proportions. Am Stat. 1998;52(2):119–26.
Belshaw Z, Wensley S. Discussing Brachycephalic Health with current and prospective dog owners. In: Packer R, O’Neill D, editors. Health and Welfare of Brachycephalic (Flat-faced) companion animals: a complete guide for Veterinary and Animal. Professionals: CRC Press; 2021.
O’Neill DG, Pegram C, Crocker P, Brodbelt DC, Church DB, Packer RMA. Unravelling the health status of brachycephalic dogs in the UK using multivariable analysis. Sci Rep. 2020;10(1):17251.
pubmed: 33057051 pmcid: 7560694 doi: 10.1038/s41598-020-73088-y
Group BW. “Stop and think before buying a flat-faced dog” 2023 [Available from: http://www.ukbwg.org.uk/ .
Pegram C, Woolley C, Brodbelt DC, Church DB, O’Neill DG. Disorder predispositions and protections of Labrador retrievers in the UK. Sci Rep. 2021;11(1):13988.
pubmed: 34262062 pmcid: 8280121 doi: 10.1038/s41598-021-93379-2
O’Neill DG, Ballantyne ZF, Hendricks A, Church DB, Brodbelt DC, Pegram C. West Highland White Terriers under primary veterinary care in the UK in 2016: demography, mortality and disorders. Canine Genet Epidemiol. 2019;6(1):7.
pubmed: 31508236 pmcid: 6720841 doi: 10.1186/s40575-019-0075-2
O’Neill DG, Rooney NJ, Brock C, Church DB, Brodbelt DC, Pegram C. Greyhounds under general veterinary care in the UK during 2016: demography and common disorders. Canine Genet Epidemiol. 2019;6(1):4.
pubmed: 31179010 pmcid: 6547581 doi: 10.1186/s40575-019-0072-5
O’Neill DG, Darwent EC, Church DB, Brodbelt DC. Border Terriers under primary veterinary care in England: demography and disorders. Canine Genet Epidemiol. 2017;4(1):15.
pubmed: 29209506 pmcid: 5702187 doi: 10.1186/s40575-017-0055-3
O’Neill DG, James H, Brodbelt DC, Church DB, Pegram C. Prevalence of commonly diagnosed disorders in UK dogs under primary veterinary care: results and applications. BMC Vet Res. 2021;17(1):69.
pubmed: 33593363 pmcid: 7888168 doi: 10.1186/s12917-021-02775-3
O’Neill DG, Mitchell CE, Humphrey J, Church DB, Brodbelt DC, Pegram C. Epidemiology of periodontal disease in dogs in the UK primary-care veterinary setting. J Small Anim Pract. 2021;62(12):1051–61.
pubmed: 34374104 pmcid: 9291557 doi: 10.1111/jsap.13405
Kortegaard HE, Eriksen T, Baelum V. Periodontal Disease in research beagle dogs – an epidemiological study. J Small Anim Pract. 2008;49(12):610–6.
pubmed: 18793256 doi: 10.1111/j.1748-5827.2008.00609.x
Marshall MD, Wallis CV, Milella L, Colyer A, Tweedie AD, Harris S. A longitudinal assessment of periodontal disease in 52 miniature schnauzers. BMC Vet Res. 2014;10(1):166.
pubmed: 25179569 pmcid: 4236762 doi: 10.1186/1746-6148-10-166
Butkoviå V, Stanin D, Capak D, Kos J. Dental diseases in dogs: a retrospective study of radiological data. Acta Vet Brno. 2001;70(2):203–8.
doi: 10.2754/avb200170020203
Amimoto A, Iwamoto S, Taura Y, Nakama S, Yamanouchi T. Effects of surgical orthodontic treatment for malalignment due to the prolonged retention of deciduous canines in young dogs. J Vet Med Sci. 1993;55(1):73–9.
pubmed: 8461430 doi: 10.1292/jvms.55.73
Hobson P. Extraction of retained primary canine teeth in the dog. J Vet Dent. 2005;22(2):132–7.
pubmed: 16149390 doi: 10.1177/089875640502200207
Klein T. Predisposing factors and gross examination findings in periodontal disease. Clin Tech Small Anim Pract. 2000;15(4):189–96.
pubmed: 11269993 doi: 10.1053/svms.2000.22244
Sauer L, Oliveira N, Andrade L, Silva E, Lavor M, Wenceslau A, et al. Occurrence of dental disorders in dogs. Acta Sci Veterinariae. 2018;46:6.
doi: 10.22456/1679-9216.88162
Wallis C, Holcombe LJ. A review of the frequency and impact of periodontal disease in dogs. J Small Anim Pract. 2020;61(9):529–40.
pubmed: 32955734 doi: 10.1111/jsap.13218
O’Neill DG, Skipper A, Packer RMA, Lacey C, Brodbelt DC, Church DB, et al. English bulldogs in the UK: a vetcompass study of their disorder predispositions and protections. Canine Med Genet. 2022;9(1):5.
pubmed: 35701824 pmcid: 9199211 doi: 10.1186/s40575-022-00118-5
James DJ, Griffin CE, Polissar NL, Neradilek MB. Comparison of anal sac cytological findings and behaviour in clinically normal dogs and those affected with anal sac disease. Vet Dermatol. 2011;22(1):80–7.
pubmed: 21114559 doi: 10.1111/j.1365-3164.2010.00916.x
Halnan CRE. The diagnosis of anal sacculitis in the dog. J Small Anim Pract. 1976;17(8):527–35.
pubmed: 966732 doi: 10.1111/j.1748-5827.1976.tb06996.x
Ragni RA. Anal sac disease and its surgical treatment. UK Vet Companion Animal. 2012;17(6):17–25.
doi: 10.1111/j.2044-3862.2012.00201.x
The Kennel Club. Breed Watch 2023 [Available from: https://www.thekennelclub.org.uk/events-and-activities/dog-showing/judging-dog-shows/breed-watch/ .
Dohoo IR, Martin W, Stryhn HE. Veterinary epidemiologic research 2003.
O’Neill DG, Baral L, Church DB, Brodbelt DC, Packer RMA. Demography and disorders of the French Bulldog population under primary veterinary care in the UK in 2013. Canine Genet Epidemiol. 2018;5(1):3.
O'Neill D. Pug health using VetCompass ‘big data’. Vet Ireland J. 2016;6(12):681–5.
O’Neill DG, Skipper AM, Kadhim J, Church DB, Brodbelt DC, Packer RMA. Disorders of Bulldogs under primary veterinary care in the UK in 2013. PLOS ONE. 2019;14(6):e0217928.
Hyun C. Radiographic diagnosis of diaphragmatic hernia: review of 60 cases in dogs and cats. jvs. 2019;5(2):157–62.
Thrusfield MV, Aitken CGG, Darker PGG. Observations on breed and sex in relation to canine heart valve incompetence. J Small Anim Pract. 1985;26(12):709–17.
Inoue M, Hasegawa A, Hosoi Y, Sugiura K. Association between breed, gender and age in relation to cardiovascular disorders in insured dogs in Japan. J Vet Med Sci. 2016;78(2):347–50.
Mattin MJ, Boswood A, Church DB, López-Alvarez J, McGreevy PD, O'Neill DG, et al. Prevalence of and Risk Factors for Degenerative Mitral Valve Disease in Dogs Attending Primary-care Veterinary Practices in England. J Veterinary Int Med. 2015;29(3):847–54.
Serfass P, Chetboul V, Sampedrano CC, Nicolle A, Benalloul T, Laforge H, et al. Retrospective study of 942 small-sized dogs: Prevalence of left apical systolic heart murmur and left-sided heart failure, critical effects of breed and sex. J Veterinary Cardiol. 2006;8(1):11–8.
Pedersen HD, Häggström J. Mitral valve prolapse in the dog: a model of mitral valve prolapse in man. Cardiovasc Res. 2000;47(2):234–43.
Kogure K. Pathology of chronic mitral valvular disease in the dog. Nihon Juigaku Zasshi. 1980;42(3):323–35.
Egenvall A, Bonnett BN, Häggström J. Heart disease as a cause of death in insured Swedish dogs younger than 10 years of age. J Vet Intern Med. 2006;20(4):894–903.
pubmed: 16955814 doi: 10.1111/j.1939-1676.2006.tb01803.x
O’Neill DG, Seah WY, Church DB, Brodbelt DC. Rottweilers under primary veterinary care in the UK: demography, mortality and disorders. Canine Genet Epidemiol. 2017;4(1):13.
O’Neill DG, Coulson NR, Church DB, Brodbelt DC. Demography and disorders of German Shepherd Dogs under primary veterinary care in the UK. Canine Genet Epidemiol. 2017;4(1):7.
Borchelt PL. Aggressive behavior of dogs kept as companion animals: Classification and influence of sex, reproductive status and breed. Appl Anim Ethol. 1983;10(1):45–61.
The Kennel Club. Breed Standards The Kennel Club2022 [Available from: https://www.thekennelclub.org.uk/breed-standards/ ].
Sanchez RF, Innocent G, Mould J, Billson FM. Canine keratoconjunctivitis sicca: disease trends in a review of 229 cases. J Small Anim Pract. 2007;48(4):211–7.
Inoue M, Hasegawa A, Hosoi Y, Sugiura K. Breed, gender and age pattern of diagnosis for veterinary care in insured dogs in Japan during fiscal year 2010. Prev Vet Med. 2015;119(1):54–60.
pubmed: 25746927 doi: 10.1016/j.prevetmed.2015.02.010
Egenvall A, Hedhammar A, Bonnett BN, Olson P. Gender, age and breed pattern of diagnoses for veterinary care in insured dogs in Sweden during 1996. Vet Rec. 2000;146(19):551–7.
pubmed: 10839449 doi: 10.1136/vr.146.19.551
Engdahl KS, Brodbelt DC, Cameron C, Church DB, Hedhammar Å, O’Neill DG. Demography and disorders of English Cocker Spaniels under primary veterinary care in the UK. Canine Med Genet. 2023;10(1):4.
pubmed: 37202773 pmcid: 10197368 doi: 10.1186/s40575-023-00128-x
O’Neill DG, Skipper AM, Barrett K, Church DB, Packer RMA, Brodbelt DC. Demography, common disorders and mortality of Boxer dogs under primary veterinary care in the UK. Canine Med Genet. 2023;10(1):6.
pubmed: 37259166 pmcid: 10234096 doi: 10.1186/s40575-023-00129-w
Adams VJ, Evans KM, Sampson J, Wood JLN. Methods and mortality results of a health survey of purebred dogs in the UK. J Small Anim Pract. 2010;51(10):512–24.
pubmed: 21029096 doi: 10.1111/j.1748-5827.2010.00974.x
Pegram C, Gray C, Packer RMA, Richards Y, Church DB, Brodbelt DC, et al. Proportion and risk factors for death by euthanasia in dogs in the UK. Sci Rep. 2021;11(1):9145.
pubmed: 33947877 pmcid: 8096845 doi: 10.1038/s41598-021-88342-0
Pegram C, O’Neill DG, Church DB, Hall J, Owen L, Brodbelt DC. Spaying and urinary incontinence in bitches under UK primary veterinary care: a case–control study. J Small Anim Pract. 2019;60(7):395–403.
pubmed: 31037739 pmcid: 6850460 doi: 10.1111/jsap.13014
Collins L, Asher L, Summers J, Diesel G, McGreevy P. Welfare epidemiology as a tool to assess the welfare impact of inherited defects on the pedigree dog population. Anim Welf. 2010;19:67–75.
doi: 10.1017/S0962728600002256
Collins LM, Asher L, Summers J, McGreevy P. Getting priorities straight: risk assessment and decision-making in the improvement of inherited disorders in pedigree dogs. Vet J. 2011;189(2):147–54.
pubmed: 21742521 doi: 10.1016/j.tvjl.2011.06.012
Egenvall A, Nødtvedt A, Penell J, Gunnarsson L, Bonnett BN. Insurance data for research in companion animals: benefits and limitations. Acta Vet Scand. 2009;51(1):42.
pubmed: 19874612 pmcid: 2777155 doi: 10.1186/1751-0147-51-42
Wolf S, Selinger J, Ward MP, Santos-Smith P, Awad M, Fawcett A. Incidence of presenting complaints and diagnoses in insured Australian dogs. Aust Vet J. 2020;98(7):326–32.
pubmed: 32662531 doi: 10.1111/avj.12981
Skipper A, Gray C, Serlin R, O’Neill D, Elwood C, Davidson J. ‘Gold standard care’ is an unhelpful term. Vet Rec. 2021;189(8):331.
pubmed: 34677842 doi: 10.1002/vetr.1113
Royal College of Veterinary Surgeons. RCVS Facts 2020. 2020.
Legislation.gov.uk. The Animal Welfare (Licensing of Activities Involving Animals) (England) Regulations 2018 2018 [Available from: https://www.legislation.gov.uk/ukdsi/2018/9780111165485 .

Auteurs

Fiona Dale (F)

Pathobiology and Population Sciences, The Royal Veterinary College, North Mymms, Hawkshead Lane, Hatfield, AL9 7TA, Herts, UK. fidale@rvc.ac.uk.

Dave C Brodbelt (DC)

Pathobiology and Population Sciences, The Royal Veterinary College, North Mymms, Hawkshead Lane, Hatfield, AL9 7TA, Herts, UK.

Gabriella West (G)

Pathobiology and Population Sciences, The Royal Veterinary College, North Mymms, Hawkshead Lane, Hatfield, AL9 7TA, Herts, UK.

David B Church (DB)

Clinical Science and Services, The Royal Veterinary College, North Mymms, Hawkshead Lane, Hatfield, AL9 7TA, Herts, UK.

Yan Hui Lee (YH)

Pathobiology and Population Sciences, The Royal Veterinary College, North Mymms, Hawkshead Lane, Hatfield, AL9 7TA, Herts, UK.

Dan G O'Neill (DG)

Pathobiology and Population Sciences, The Royal Veterinary College, North Mymms, Hawkshead Lane, Hatfield, AL9 7TA, Herts, UK.

Classifications MeSH