Heat Stroke in Pets: How to Recognize It, Prevent It, and Act Fast

Warm weather is a welcome part of summer in Endicott and the Southern Tier, but high temperatures can become dangerous for pets faster than many owners realize. Dogs and cats do not cool themselves as efficiently as people do. Dogs rely heavily on panting, and cats often hide early signs of distress. When a pet’s body temperature rises too high and they cannot cool down, heat stroke can become a life-threatening emergency that can cause severe organ damage and even death if not treated quickly.

What Is Heat Stroke?

Heat stroke occurs when a pet becomes dangerously overheated and can no longer regulate their body temperature. It can happen during hot walks, outdoor play, car rides, grooming dryers, being left in a vehicle, or spending time in poorly ventilated spaces such as garages, sheds, or sunrooms.

Even a “quick errand” can be dangerous. The American Veterinary Medical Association warns that parked cars can become dangerously hot very quickly, even with the windows cracked.

Signs of Heat Stroke in Pets

Early recognition matters. Heat stroke can progress quickly, so pet owners should watch for:

• Heavy or excessive panting
• Drooling or thick saliva
• Bright red, dark red, pale, or muddy-colored gums
• Weakness or wobbliness
• Restlessness, anxiety, or seeking shade/water
• Vomiting or diarrhea
• Rapid heartbeat
• Trouble breathing
• Collapse
• Tremors or seizures
• Confusion or unresponsiveness

Cats may show more subtle signs than dogs, including open-mouth breathing, hiding, drooling, weakness, vomiting, or collapse. The Royal Veterinary College notes that early signs in dogs and cats can include panting, agitation, drooling, red gums, vomiting, and diarrhea.

Pets at Higher Risk

Any pet can suffer from heat stroke, but some are at greater risk:

• Flat-faced breeds such as Bulldogs, Pugs, French Bulldogs, Boston Terriers, Persians, and Himalayans
• Senior pets
• Very young puppies or kittens
• Overweight pets
• Pets with heart disease, airway disease, or breathing problems
• Thick-coated or dark-coated pets
• Pets exercising in hot or humid weather
• Pets without access to shade, water, or ventilation

Cornell specifically notes that short-muzzled breeds, older dogs, and overweight dogs are at higher risk.

How to Prevent Heat Stroke

The best treatment is prevention. During hot or humid weather:

Walk early or late

Exercise pets in the early morning or evening when temperatures are lower. Avoid strenuous activity during the hottest part of the day.

Check pavement temperature

Asphalt, concrete, and blacktop can burn paws and radiate heat upward. If it is too hot for your hand, it is too hot for your pet’s feet.

Provide shade and water

Pets outdoors should always have access to fresh water and shade. Better yet, bring them indoors during high heat.

Never leave pets in cars

Not for “just a minute.” Heat builds rapidly inside vehicles, and cracking the windows does not make it safe.

Be careful with grooming

A healthy coat can help protect pets from sun and heat. Avoid shaving double-coated breeds unless specifically recommended by your veterinarian.

Use extra caution with high-risk pets

Flat-faced, senior, overweight, or medically fragile pets should have very limited heat exposure.

What to Do If You Think Your Pet Has Heat Stroke

Heat stroke is an emergency. Acting quickly can save your pet’s life.

1. Move your pet out of the heat immediately

Bring them into shade, air conditioning, or a cool, well-ventilated area.

2. Call a veterinarian right away

Contact Endicott Veterinary Care Center or the nearest emergency veterinary hospital. Even if your pet seems to improve, internal injury can continue after the body starts cooling.

3. Begin safe cooling

Use cool, not ice-cold, water. Wet your pet’s body, especially the belly, paws, groin, and armpit areas, and place them near a fan or air conditioning if available. AAHA advises moving the pet to a cool area, contacting a veterinarian immediately, and offering small amounts of cool water only if the pet is alert and able to drink.

4. Do not use ice baths

Ice or very cold water can cause blood vessels to constrict, which may slow cooling and worsen shock. AAHA and VCA both advise against ice-cold cooling methods.

5. Do not force water

Offer small amounts of cool water if your pet is awake and able to swallow. Do not force water into the mouth of a weak, confused, vomiting, or unconscious pet.

6. Go to the veterinarian

Cooling at home is only first aid. Pets with heat stroke may need IV fluids, oxygen, bloodwork, monitoring, and treatment for organ injury, clotting problems, shock, or seizures.

When in Doubt, Treat It Like an Emergency

If your pet is panting heavily, weak, vomiting, collapsing, acting confused, or having trouble breathing after heat exposure, do not wait to “see if they get better.” Heat stroke can turn serious very quickly.

Please call Endicott Veterinary Care Center if you are concerned your pet may be overheating. When it comes to heat stroke, fast action and veterinary care make all the difference. Better a cautious phone call than a dangerous delay — old-fashioned common sense still saves lives.