The study was part of a research project called VetCompass, through which the RVC, in collaboration with Vets Now, collects anonymised clinical information on over 6 million companion animals under veterinary care in the UK.
The study investigated bitches presented with difficulty giving birth (dystocia) from among almost 20,000 bitches attending 50 Vets Now surgeries. Researchers found that out of 20,000 bitches receiving emergency veterinary care, 3.7 per cent of these were treated because of difficulties encountered giving birth.
The most commonly affected breeds were the French Bulldog (15.9 times more likely), Boston Terrier (12.9 times more likely), Chihuahua (10.4 times more likely) and Pug (11.3 times more likely).
Dr Dan O’Neill, a companion animal epidemiologist within the VetCompass Programme, said: "Giving birth in dogs is not always a benign process and our research shows this risk is especially exacerbated in some common brachycephalic and toy breeds. Prospective owners should bear these welfare costs for high risk breeds in mind when choosing their new puppy."
Caroline Kisko, Kennel Club Secretary, said: 'VetCompass' research will not only enable dog breeders to make responsible breeding choices to improve the health of these dogs, it will help to highlight what puppy buyers need to be looking out for if they are intent on owning one of these breeds. If people are choosing a breed simply for its looks and are not going to a reputable breeder, they are likely to face high vet costs and a lifetime of heartache."
This study builds on previous 'purchasing' research by the RVC which found that appearance is the number one reason why owners purchase flat-faced breeds, even though their large, round, wide-set eyes, and flat rounded faces are linked with a variety of inherited diseases.
Dr Rowena Packer, lead author of the study and Research Fellow at RVC, said: "Potential puppy buyers attracted to the appearance of these breeds should seriously consider whether they are emotionally and financially prepared to take on a breed with high risks of health complications, and consider whether alternative, lower-risk breeds would better fit their lifestyle."
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