When summer arrives, all dogs need extra care in the heat. But there are breeds that start at a disadvantage: those with flat faces and compressed airways, known as brachycephalic breeds. For them, heat is not just an inconvenience — it can become a life-threatening emergency within minutes.
If you have a French bulldog, a pug, a Carlino, or any short-nosed breed, this article is essential for getting through summer safely.
What does 'brachycephalic' mean?
The term brachycephalic describes dogs whose skull has been selectively bred to be shorter and wider than normal. This compresses the internal structures: the soft palate, the nasal passages, and the trachea. The result is that these dogs need more effort to breathe the same amount of air as any other dog.
The most affected breeds are:
- French bulldog
- Pug (Carlino)
- English bulldog
- Boston Terrier
- Shih Tzu
- Boxer
- Pekingese
- Cavalier King Charles Spaniel
Why is heat especially dangerous for them?
Dogs do not sweat through their skin the way humans do. They cool themselves primarily by panting: they circulate air rapidly through their airways to release heat through evaporation. A brachycephalic dog, with compressed airways, cannot pant with sufficient efficiency. When the environment is hot and humid, their thermoregulation capacity collapses far sooner than that of a long-nosed dog.
An ambient temperature of 28–30°C can be enough to cause heatstroke in a brachycephalic dog, especially if there is humidity or direct sun exposure.
Warning signs you should not ignore
Mild signs
- Excessive and noisy panting
- Heavy drooling
- Mucous membranes (gums) that are bright red
- Agitation or restlessness
- Difficulty walking or weakness
Severe signs (immediate veterinary emergency)
- Bluish or purple mucous membranes (cyanosis)
- Loss of coordination or convulsions
- Fainting or loss of consciousness
- Vomiting or diarrhoea
- Very shallow or absent breathing
At any severe sign, take your dog to the emergency vet without delay. Every minute counts.
How to protect your brachycephalic dog in summer
Control walking times
Only go out during the coolest hours of the day: before 9am and after 8pm. The pavement can retain heat long after the air temperature drops.
Never leave them in a car
The interior of a vehicle can reach 50–60°C in minutes in the sun. A brachycephalic dog can suffer a fatal heatstroke before you can return.
Provide cool, shaded areas
Permanent access to fresh water and a shaded, well-ventilated spot is essential. Fans and cooling gel mats can make a real difference.
Avoid intense exercise
In summer, walks should be short and calm. No running, jumping, or vigorous play in the sun.
Additional care if your dog has severe brachycephalic syndrome
Some dogs have malformations so pronounced that corrective surgery can significantly improve their quality of life and heat tolerance. Consult your vet if your dog constantly pants, snores heavily, or becomes exhausted with minimal effort.
Nutrition and summer: what you can do through diet
Quality nutrition also contributes to the wellbeing of brachycephalic dogs in summer. Overweight dogs have even more difficulty breathing and regulating their temperature. A balanced diet, with the right number of calories for their ideal weight, is an important protective factor.
At OnlyFresh you will find feeding options formulated with high-quality ingredients — such as Harper and Bone, Amanova, and TrovetPlus — that can help keep your brachycephalic dog at their optimal weight and with the right energy to face summer without additional risks.
