What Is a Brachycephalic Breed?

Brachycephalic breeds are dogs (and cats) with shortened skulls that result in flattened faces. The most common include:

  • Bulldogs (English and French)
  • Pugs
  • Boston Terriers
  • Shih Tzus
  • Boxers
  • Cavalier King Charles Spaniels
  • Persian and Himalayan cats

Their distinctive appearance comes at a cost: these breeds often suffer from Brachycephalic Obstructive Airway Syndrome (BOAS), which causes narrowed nostrils, an elongated soft palate, and a narrower trachea. Under normal conditions, this is manageable. Under stress and heat — both common during relocation — it can become a serious medical emergency.

Why Relocation Is Higher Risk for These Breeds

The physical challenges of BOAS are amplified by:

  • Heat: Brachycephalic dogs cannot pant efficiently, making them prone to overheating even in mild conditions.
  • Stress: Anxiety increases their respiratory rate, which compounds breathing difficulties.
  • Altitude: Reduced oxygen availability at altitude makes breathing harder for already-compromised airways.
  • Confinement: Being in a crate or carrier limits their ability to position themselves for optimal breathing.

Air Travel: Know the Restrictions

Most major airlines — including American, Delta, United, and most international carriers — have banned brachycephalic breeds from traveling in cargo holds due to the heightened risk of in-flight death. Some airlines also restrict them from cabin travel. Before booking any flight, contact the airline directly to confirm their specific breed policy.

If You Must Fly

  • Book the coolest time of day and shortest possible route.
  • Obtain written clearance from your veterinarian specifically stating your dog is fit to fly.
  • Never sedate without veterinary advice — sedation depresses the respiratory system, which is particularly dangerous for these breeds.
  • Use a well-ventilated, rigid-sided crate that maximizes airflow.

Ground Travel: The Safer Option

For brachycephalic breeds, driving is nearly always preferable to flying. Key tips:

  • Keep the car cool. Run the air conditioning throughout the journey, even in mild weather.
  • Take frequent breaks every 1–2 hours to allow them to stretch, urinate, and regulate temperature in fresh air.
  • Never leave them in a parked car, even for a few minutes. Temperatures in a vehicle rise rapidly and can be fatal.
  • Travel during cooler hours — early morning or evening — in warm seasons.
  • Keep a portable water supply and offer water at every stop.

Pre-Move Vet Consultation Is Essential

Before any relocation with a brachycephalic pet, schedule a dedicated vet consultation. Your vet can:

  • Assess the severity of their airway condition.
  • Recommend or prescribe anti-anxiety medications that are safer for compromised airways.
  • Advise on cooling strategies specific to your dog's fitness level.
  • Provide documentation of fitness for travel if required.

Signs of Respiratory Distress to Watch For

During and after travel, monitor closely for:

  • Excessive panting or labored breathing
  • Blue or pale gums (cyanosis) — this is an emergency
  • Noisy, raspy breathing that is more pronounced than usual
  • Weakness, collapse, or inability to stand
  • Extended neck with mouth wide open, struggling to breathe

If you observe any of these signs, move your pet to a cool environment immediately and contact an emergency veterinarian. Brachycephalic respiratory crises can escalate very quickly.

With careful planning, many brachycephalic dogs make moves safely every year. The key is knowing the risks upfront and taking every precaution to minimize them.