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First Signs of Heat Stroke in Dogs and What to Do

What are the first signs of heat stroke in dogs?

Heavy panting is often one of the first signs that a dog is overheating. You may also notice excessive drooling, restlessness, a rapid heartbeat, or gums that look unusually red. As heat illness worsens, a dog may become weak, unsteady, confused, or unresponsive.

Heat stroke is a life-threatening emergency. If your dog is showing signs of overheating, move them to a cooler place, begin cooling them, and contact a veterinarian immediately. You do not need to wait for a temperature reading before acting.

How can you recognize early overheating?

Watch for changes in your dog’s behavior as well as physical symptoms. Early warning signs can include:

Heavy or persistent panting that does not ease with rest
Excessive drooling or thick saliva
Seeking shade, seeming agitated, or struggling to settle
Bright red gums or tongue
Weakness, slowing down, or difficulty walking

Vomiting, diarrhea, confusion, collapse, and seizures can signal severe heat illness. Signs can progress quickly, especially in hot cars, humid weather, or during strenuous exercise. Flat-faced dogs, older dogs, and dogs with health conditions can be particularly vulnerable.

What should you do if your dog may have heat stroke?

Move your dog out of the heat and call your veterinarian or an emergency veterinary clinic. Start cooling your dog with cool tap water and use a fan or air movement to help the water evaporate. Do not delay transport to the veterinary clinic while trying to cool them.

You can offer small amounts of cool water if your dog is alert and able to drink, but do not force water into their mouth. Avoid covering your dog with wet towels, which can trap heat. Even if your dog seems to recover, veterinary care is essential because heat stroke can cause internal damage that is not immediately visible.

For more guidance, visit our guide to spotting heat stroke in dogs and providing emergency care.

FAQ

What are the symptoms of heat stroke and how is it treated?

In dogs, symptoms include heavy panting, excessive drooling, weakness, confusion, vomiting, and collapse. Begin cooling with cool tap water and seek emergency veterinary care immediately; treatment may include fluids, monitoring, and care for organ damage.

Does heat affect stroke survivors?

Yes. Human stroke survivors may be more vulnerable to heat because of mobility limitations, difficulty communicating thirst, or changes in temperature regulation. Staying cool and hydrated and discussing individual risks with a healthcare professional can help.