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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchExtreme dog breeding selects for exaggerated physical traits, such as a very short skull, even when those traits make it harder for a dog to breathe, move, stay cool, or stay healthy. Coco’s story, as Battersea described it in a charity account published on 10 December 2024, shows what that can look like in one dog. Her case is a concrete example of the risks, not proof that every dog of her breed mix has the same problems.
What “extreme” means in dog breeding
Breeders and kennel clubs have long chosen dogs for looks: a flatter face, a rounder head, a more compact body. Some of these features are only mild, but others are pushed so far that the dog’s anatomy starts to work against it. The veterinary term for the short-skulled shape is brachycephaly, and it is most commonly discussed in breeds such as the French Bulldog and the Pekingese. The British Veterinary Association (BVA) lists upper-airway abnormalities and breathing difficulty among the problems associated with it.
The key point is that the harm comes from the trait itself, not from a dog’s individual care alone. A flat-faced dog can have a healthy life, but its risk of breathing and heat problems is higher because of how its skull, airway, and soft tissues are arranged. That is why welfare groups focus on the conformation a breed is being bred toward, rather than only on how well a single dog is looked after.
Coco’s story
According to Battersea, Coco was a two-year-old French Bulldog and Pekingese cross whose previous owners could no longer afford her medical care. When she arrived at the charity, staff recorded several concerns that they linked to her build:
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- Mobility: bowed front legs and a waddling gait, which Battersea said were likely caused by congenital deformities and would bring lifelong mobility challenges.
- Breathing: flat-facial features that left her struggling to breathe and tiring easily.
- Heat: a tendency to overheat quickly.
- Heart: a suspected heart arrhythmia, which Battersea said was likely linked to genetic vulnerabilities in her breed mix.
These are Battersea’s case details and its own assessment. The account does not present an independent diagnosis, and it does not say what tests were run to reach the arrhythmia suspicion. Battersea reported that Coco later found a new home where she would receive ongoing care. Its December 2024 account does not describe her health since then, so her current condition is not known from that source.
Coco’s case sits within a wider pattern at the charity. Battersea reported that its vets carried out 78 complex surgeries for Brachycephalic Obstructive Airway Syndrome (BOAS) in 2023, performed to widen airways and ease health problems in flat-faced breeds. That is a count of one charity’s casework, not a rate for the dog population as a whole.
Shaun Opperman, Battersea’s Head Veterinary Surgeon, said: “It’s deeply concerning that animals like Coco are still being bred with such exaggerated traits that directly affect their ability to live a comfortable and healthy life.”
What the conditions are
Breathing and BOAS
BOAS is the name for a group of airway problems in flat-faced dogs. A shortened skull can leave less room for the nostrils, windpipe, and throat, and soft tissue can then partly block the airway. The result is noisy breathing, exercise intolerance, and difficulty cooling down. Battersea’s surgical casework is aimed at widening these airways.
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Overheating and exercise
Because breathing is less efficient, a flat-faced dog has fewer ways to lose heat. Coco’s overheating and early fatigue are typical of this pattern. For owners, this means that walks, play, and warm weather need to be planned around the dog’s ability to cool itself, not around how much exercise a healthy dog of another shape would manage.
Other problems the BVA associates with extreme conformation
The BVA’s guidance lists more than breathing. Extreme conformation can also be linked to sleep apnoea, regurgitation, eye disease, reproductive difficulty, skin infections, and dental problems. These are not present in every dog with a flat face, but they are the reason a breed’s shape matters for welfare beyond the airway.
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What the figures show and do not show
Several numbers are often quoted in this debate. They measure different things and cover different populations, so they should not be combined or read as a single rate.
| Figure | Source and year | What it measures | Limit on what it shows |
|---|---|---|---|
| 78 complex BOAS surgeries | Battersea, 2023 | Surgeries carried out by Battersea’s vets to widen airways in flat-faced dogs | One charity’s casework; not a population rate |
| 56% of brachycephalic dogs seen in practice needed treatment for breed-related health issues | BVA, 2017, reporting its Voice of the Veterinary Profession survey | Survey-reported treatment need among brachycephalic dogs that vets saw | Not a prevalence figure for all brachycephalic dogs |
| Up to 83% of some brachycephalic breeds have spinal defects | RSPCA care guidance; year not stated on the page | Spinal defects in certain brachycephalic breeds | Applies to “some” breeds only; not to all brachycephalic dogs, and the year is not given |
Why extreme features persist
The BVA’s position is that breed standards should be based on evidence, and that health assessments and collective action by the people who breed, show, and sell dogs are needed to change what is rewarded. Changing a standard takes time, and dogs with extreme features continue to be bred and sold while it happens. That is why individual buyers and rescue organisations have a practical role, and why the choices made at the point of purchase matter.
If you are thinking about getting a flat-faced dog
The advice from Battersea and the BVA is consistent, and it can be followed before a purchase or adoption:
- Speak with a local veterinary surgeon about the potential health and welfare issues of the breed you are considering. The BVA also points prospective owners to guides such as the Animal Welfare Foundation Puppy Contract.
- Research the breed’s inherent health issues and the likely costs of managing them before committing.
- Consider a reputable rescue or a licensed breeder that prioritises animal health. Battersea advises this, but a sourcing route does not guarantee a healthy dog, so ask about health screening and the parents’ conformation.
- The RSPCA says that adopting a flat-faced pet can reduce demand for animals bred with these health issues.
If you already live with a brachycephalic dog
The RSPCA’s care guidance gives general steps for owners. These are management measures; they do not treat breathing problems or change a dog’s conformation.
- Speak to a veterinary professional about any sign of breathing difficulty, overheating, or skin disease, rather than waiting to see whether it resolves.
- Use a harness rather than a collar on walks, so that the dog’s neck is not under pressure.
- Treat difficulty giving birth as a veterinary emergency, and contact a vet immediately.
- Ask your vet to build a care plan for your individual dog, since symptoms and the right response vary between dogs.
Coco’s account is a reminder that the harms of extreme conformation are real and can accumulate across mobility, breathing, heat, and heart health. Whether the next flat-faced puppy in a home or a shelter goes the same way depends on the decisions made by breeders, buyers, and the people who set breed standards.
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