Beyond the Snout: New Research Highlights Widespread Breathing Issues in Popular Dog Breeds
Aspiring dog owners are being urged to look beyond the adorable, squashed faces of certain breeds and consider a wider range of dogs when choosing their next furry companion. Recent research has revealed that serious breathing disorders are far more common than previously understood, particularly in brachycephalic breeds – those characterised by their short snouts and flattened faces.
These distinctive features, often perceived as “cute,” have propelled breeds like English bulldogs, French bulldogs, and pugs into immense popularity over the past few years. However, this surge in demand has unfortunately coincided with a rise in associated health problems. The most concerning of these is Brachycephalic Obstructive Airway Syndrome (BOAS), a condition readily identified by noisy breathing. BOAS can severely impact a dog’s quality of life, leading to difficulties with exercise, sleep disturbances, and an inability to cope with heat or stressful situations.
While concerns about BOAS have historically centred on a few well-known breeds, a comprehensive study has now broadened the scope of at-risk dogs. Researchers at the University of Cambridge examined 898 dogs across 14 different breeds. These included breeds commonly associated with flat faces, such as boxers, Shih Tzus, and Pekingese, but also dogs like Cavalier King Charles Spaniels, Chihuahuas, and Staffordshire Bull Terriers, which may not immediately spring to mind when thinking of BOAS.
The study involved rigorous respiratory testing and detailed physical and facial measurements for all participating dogs. The findings were stark:
- Highest Risk: Pekingese and Japanese Chin breeds exhibited the most severe rates of BOAS, with over 80 per cent of individuals in the study affected.
- Moderate Risk: Five breeds were found to have a moderate risk, with between half and three-quarters of the dogs showing signs of BOAS. These included the Cavalier King Charles Spaniel, Shih Tzu, Griffon Bruxellois, Boston Terrier, and Dogue de Bordeaux.
- Lower Risk: Only among the Maltese and Pomeranian breeds did the researchers find no dogs with clinically significant BOAS.
The research identified three primary contributors to disordered breathing:
* Excess Weight: Being overweight significantly exacerbates breathing difficulties.
* Narrowed Nostrils: Constricted nostrils make it harder for dogs to inhale air efficiently.
* Extreme Facial Flatness: The more extreme the facial flattening, the greater the risk of airway compromise.
Interestingly, the analysis suggests that other physical traits, such as very short or screw tails, may also be linked to anatomical changes that contribute to BOAS. This indicates that the issue is not solely about facial flatness but a complex interplay of various physical characteristics.
What This Means for Prospective Owners and Breeders
The implications of this research are significant for both future dog owners and those involved in breeding.
For Prospective Owners:
- Educate Yourself: Before purchasing a puppy, thoroughly research the potential health issues associated with the breed, especially concerning breathing.
- Look for Health Testing: Prioritise puppies from parents who have undergone appropriate health screenings.
- Consider Function Over Extreme Appearance: Be aware that exaggerated physical traits, particularly extreme facial flatness, can predispose dogs to chronic health problems.
Francesca Tomlinson from the University of Cambridge advises, “It’s not necessarily about eliminating the defining features of a breed, but about avoiding extremes and supporting breeding decisions that prioritise function as well as appearance.”
For Breeders:
- Focus on Health and Welfare: Breeders have a crucial role in mitigating BOAS. The study suggests that focusing on reducing the exaggeration of certain physical traits can directly lower disease risk.
- Avoid Extremes: It’s not just the breed itself, but the degree to which extreme physical characteristics are present that determines negative outcomes. Selecting away from these extremes is a practical step towards improving canine welfare.
Expert Opinions and Methodological Considerations
Veterinary professionals have long been aware of the prevalence of breathing issues in brachycephalic dogs. Anna Quain from the University of Sydney highlights the public’s underappreciation of the chronic oxygen deprivation and heat stress these dogs endure due to their “cute” flat faces. She likens breeding for such features to “designing a car without a radiator,” emphasizing that welfare should always precede human aesthetic preferences.
Paul McGreevy, also at the University of Sydney, echoes these sentiments, stating that the study confirms widespread airway compromise among flat-faced dogs, noting that breed labels are less relevant than the actual physical compromise.
However, McGreevy also raised some valid points regarding the study’s methodology, particularly the reliance on subjective grading of breathing sounds. Tomlinson clarified that the assessment includes objective criteria and follows a standardised protocol, and the exercise test is designed to evaluate airway response to mild exertion rather than athletic capability.
Ultimately, this research serves as a vital reminder that the pursuit of certain aesthetic trends in dog breeds can come at a significant cost to the animals’ health and well-being. A greater understanding and conscious effort from owners and breeders alike are essential to ensure a healthier future for our canine companions.
