Dogs & cats
Brachycephalic (flat-faced) dogs
French Bulldog, Pug, Boston Terrier, etc.
Most important: Above 25°C is the heatstroke zone. Check snoring and breathing sounds every day
Basics
- Lifespan
- 10–13 years
- Weight
- 6–14 kg
- Temperament
- Cheerful and affectionate. Extremely vulnerable to heat and exertion
- Care difficulty
- High (airway, heatstroke, skin and eye management)
- Legal status
- Registration and rabies vaccination are mandatory (Rabies Prevention Act)
- Key point
- Above 25°C is the heatstroke zone. Check snoring and breathing sounds every day
Ecology & traits
- Body
- Short nose with narrow nostrils. Long soft palate and narrow airway. Protruding eyes that are easily injured
- Origin & range
- The Pug is a Chinese companion dog. Bulldog types originated in Britain and were miniaturized in France and the US
- Wild habitat
- Ancestral wolves ranged from forest to grassland. Brachycephalic breeds are human-made and suited to indoor life
- Activity & sleep
- Mostly diurnal but cannot be active during hot hours. Snoring often reduces sleep quality
- Social behavior & people
- Highly social pack animals that want to stay close to people. Low aggression and tolerant of children
Characteristic behaviors
- Panting sheds heat poorly, so body temperature does not drop. The breed most vulnerable to heat
- Excitement disrupts breathing and can cause fainting. Keep play sessions short
- Sebum and food debris collect in facial folds and cause dermatitis. Wipe and dry daily
Common illnesses: warning signs & prevention
Brachycephalic airway syndrome
SignsLoud snoring, harsh labored breathing, purple tongue after exercise, fainting when excited, regurgitation
PreventionNo obesity. Avoid excitement, heat and long exercise. Use a harness. Discuss nostril/soft palate surgery at a young age
Heatstroke
SignsWide-mouthed panting, drooling, dark red tongue, staggering, vomiting, reduced consciousness
PreventionAvoid going out above 25°C. Air conditioning 24 hours. Walk only early morning or at night. Never leave in a car, even for minutes
Skin fold dermatitis
SignsRedness deep in facial or tail folds, odor, moist raw skin, rubbing the face from itching
PreventionWipe deep in the folds daily with damp gauze, then dry with a cloth so no moisture remains. Always wipe after meals
Corneal ulcer
SignsSquinting, tearing or discharge, cloudy white eye surface, rubbing the eye with a paw. Protruding eyes are easily injured
PreventionDo not let the dog rub its face. Avoid tall grass on walks. See the vet the same day if squinting (it can perforate within days)
Intervertebral disc disease
SignsYelps when picked up, arched back, wobbly or paralyzed hind legs. French Bulldogs often have hereditary spinal malformations
PreventionPrevent obesity. Ramps for steps. No jumping. Support chest and hips level when lifting
Allergic dermatitis
SignsItchy paws, armpits, ears and belly, redness, hair loss, ear inflammation. Common in French Bulldogs and Pugs
PreventionWeekly shampoo. Identify food allergies with a therapeutic diet. See the vet early to find the cause
Warning-sign checklist
Check once a day. If even one applies, contact an animal hospital early.
First aid for illness
Labored breathing, purple tongue
Rest in an air-conditioned room, keep calm. Wet the neck and armpits and use a fan. If no improvement, call the emergency (after-hours) animal hospital at once
Suspected heatstroke
In a cool place, pour room-temperature water on the neck, armpits and inner thighs and cool with a fan. No ice. Go to the vet immediately while cooling
Squinting and in pain
Use an Elizabethan collar to stop rubbing. Do not apply eye drops on your own; see the vet the same day (ulcers perforate within days)
Regurgitating or vomiting foam
Watch for breathing problems. Split meals into small portions and rest after eating. See the vet if it recurs or breathing is labored
Common injuries: prevention & first aid
Eye injury or proptosis
PreventionProtruding eyes easily bump into objects. Pad corners of low furniture. Beware of face contact with other dogs
First aidIf the eyeball pops out, do not touch it; cover with moist gauze and go to emergency care at once. Do not let it dry out
Heatstroke (on a walk)
PreventionWalk only below 25°C, early morning or at night. Carry an ice-pack vest and water
First aidIn the shade, pour water on the body and use a fan or breeze. Do not let the dog walk; carry it and go to the vet immediately
Intervertebral disc injury
PreventionNo jumping onto sofas or beds. Ramps for steps. Mats on hard flooring
First aidPlace on a board or in a crate without moving the spine and go to the vet immediately. Do not pick up even if in pain
Aspiration (regurgitation)
PreventionSlow-feeder bowl. Avoid exercise or excitement after meals. Raise the bowl slightly
First aidCoughing or labored breathing after regurgitation may mean aspiration pneumonia. See the vet the same day
Zoonoses (diseases that can spread to people)
Pasteurellosis
RouteBites, scratches, mouth-to-mouth feeding
PreventionWash wounds under running water right away. No mouth-to-mouth feeding or kissing. See a doctor if a wound swells
Rabies
RouteBite from an infected dog (Japan is rabies-free but imported cases occur)
PreventionAnnual vaccination is a legal duty. If bitten by a dog abroad, see a doctor immediately
Dermatophytosis (ringworm)
RouteTouching the skin or fur of an infected dog
PreventionSee the vet if you find circular hair loss. Wash hands after contact. Separate bedding
Toxocariasis (dog roundworm)
RouteEggs in feces reach the mouth via hands or soil
PreventionRemove feces promptly. Regular deworming. Avoid defecation where children play
Husbandry: food, water, toys, nest, bedding
Food
- Complete and balanced food 2–3 times a day in a slow-feeder bowl
- Obesity worsens breathing. Keep a body shape where ribs can be felt
- Place the bowl on a slightly raised stand to prevent regurgitation
Water
- Always fresh water. In summer float ice and provide several spots
- Always carry water and ice packs on walks
Never feed
- Grapes, raisins, onions, chocolate
- Xylitol-containing sweets and gum
- Chicken bones, large chunks (easily choke)
Toys & play
- Soft rope or rubber toys (short sessions)
- Puzzle toys and scent games use the brain without excitement
- Avoid rough tug-of-war and ball throwing
Nest, bed & hideout
- A crate in a quiet, air-conditioned spot
- A cushion that lets the dog sleep with its head raised (easier breathing)
Bedding & litter
- Aluminum or gel cooling mats in summer
- Non-slip flooring (cork or rubber mats)
- Indoor toilet. Change pee pads every time
Housing: cage, exercise, temperature & humidity
Cage / housing material
Well-ventilated steel crate (avoid enclosed types)
Size & space
Room to lie down, stand and turn (about 75 cm deep)
Layout
- Crate against a wall where the air-conditioning reaches
- Both a water bottle and a heavy water bowl
- Cooling mat and non-slip surface on the floor
Placement notes
- Never in direct sun, by a window or where heat builds up
- In summer, place a thermometer at dog height and confirm 25°C or below
Exercise, free-roam & walks
- Twice a day, 15–20 minutes each. Stop if breathing becomes heavy
- No walks at 25°C or above or humidity 70% or above
- Harness required. A collar compresses the airway
Temperature & humidity
Temperature20–24°C. Above 25°C is the heatstroke danger zone
Humidity40–60%. High humidity worsens breathing and skin
Summer & winter
- Summer: air conditioning 24 hours, walks only around 5 a.m. or at night
- Winter: dry heated air blocks the nose. Use a humidifier
Grooming & protection from predators
Nail trimming
Every 2–3 weeks. Do not let the dog get excited during trimming; stop if breathing becomes heavy
Brushing, skin & coat care
Rubber brush twice a week. Wipe and dry deep in the folds daily. Weekly shampoo
Other care
Check the eye surface daily and wipe discharge. Brush teeth daily. Wipe the base of the tail too
Protection from predators
- Heartworm from mosquitoes (monthly preventive)
- Ticks (full-body check after walks)
- Face contact with other dogs (prevent eye injuries)
Care precautions (accident prevention)
Foreign-body ingestion
Greedy eaters that gulp socks, toys and food wrappers whole. Narrow airway means high choking risk. Do not induce vomiting; go to the vet immediately
Being stepped on
Clings to your feet and is easily stepped on. If breathing becomes labored after being stepped on, go to the vet immediately (chest compression can be fatal)
Getting pinched
Tails and paws get caught in doors and sliding doors. Use door stoppers and close doors slowly in rooms where the dog is
Falls
Jumping off sofas or beds injures the spine and knees. Install ramps. Hold the dog only while sitting
Escape
An escape on a hot day leads to heatstroke within tens of minutes. Gate at the entrance, license tag and microchip. If it escapes, do not chase; search with water in hand
How to safely release a bite
Never do this
- Pull the dog off (the wound tears)
- Yank the collar hard (airway closes and the dog faints)
Safe release procedure
- Stop moving and say "drop it" in a quiet, low voice
- Lift the dog's hind legs or pull its body backward
- Splash water or distract with a treat
- Once released, isolate in a cool room and let breathing settle
After the release
Wash the wound under running water for 10 minutes and apply pressure to stop bleeding. Check the dog's breathing too. If it swells, see a doctor
Emergency care manual
Go to an emergency vet now (life-threatening)
- Tongue or gums purple, labored breathing
- Panting will not stop and consciousness is fading
- Eyeball popped out or bleeding from the eye
- Hind legs suddenly stop working
See a vet the same day
- Squinting, cannot open the eye, cloudy white eye
- Regurgitation twice or more in a day
- Folds raw and bleeding with a strong odor
What to tell the vet & what to bring
Time of onset, room temperature, walk time, photo of vomit, current medications. Keep cooling during transport
Checking consciousness, breathing & heartbeat
- Call the dog's name and pinch the ear to check response
- Check breathing by chest movement (normal 15–30/min)
- Check pulse at the inner thigh (normal 80–130/min)
Resuscitation steps
- Lay on its back and stack both hands over the breastbone
- Compress one-third of chest depth, 100–120 per minute
- After 30 compressions, close the mouth and give 2 breaths into the nose
- Check pulse every 2 minutes and continue until you reach the vet
Stopping bleeding
- Press firmly with a clean towel for 5 minutes or more
- Raise limbs above the heart
- If it will not stop, keep pressing and go to the vet immediately
Transport
- Air-conditioned car, ice packs wrapped in a towel against the body
- If unconscious, extend the neck and pull the tongue forward to open the airway
Learn with the case method
Case method (50 scenario questions)
Multiple-choice scenarios covering illnesses, injuries and accidents that can happen to Brachycephalic (flat-faced) dogs, with answers, explanations, issues and improvements.
Start the questions
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