This post today is about what to do if your pet is overheating in the car. Even just a short amount of time inside a parked vehicle can be extremely dangerous for pets, especially dogs. This risk remains high even if the windows are slightly open or the car is parked in the shade. With UK temperatures recently rising above seasonal norms and more warm weather on the horizon, Regtransfers shares essential advice on recognising the symptoms of heat stress in pets and how to respond effectively.

1. Heavy Panting or Laboured Breathing
Panting helps animals regulate their body temperature, but when it becomes fast, shallow, or strained, it could signal the onset of heatstroke. If your dog is panting excessively or appears to be struggling to breathe, they may be in serious trouble.
The first step is to get your pet into a cooler environment, preferably indoors with a fan or air conditioning. Offer a small amount of cool (not icy) water and let them drink slowly. Applying damp towels to areas such as their neck, armpits, and paw pads can help lower their temperature safely.
Avoid using ice baths or very cold water, as this may cause blood vessels to constrict, making the situation worse. Always consult your vet immediately, even if your dog starts to look better.
2. Gum Colour Changes: Red, Pale, or Blue
Your pet’s gums can reveal important clues about their internal condition. In the early stages of overheating, gums may become bright red. As the situation worsens, they may appear pale or even bluish, which suggests poor circulation.
Check your dog’s responsiveness by softly calling their name or offering a toy. If their gums look unusual, begin cooling efforts right away and prepare to head to the nearest veterinary clinic. It’s also helpful to note any changes in gum colour or breathing rate. This information will assist your vet with treatment decisions.
3. Vomiting or Thick Drool
Excessive drooling, vomiting, or dry heaving are all signs that your pet’s body is failing to manage the heat. These symptoms often follow intense panting and should be considered an emergency.
If your dog starts to vomit or produces thick saliva, stop any physical activity and move them into a quiet, shaded, or air-conditioned area. Avoid feeding them, even treats, as eating could make the vomiting worse. Offer cool water in small amounts and continue applying wet towels or using fans to lower their body temperature.
Because vomiting can rapidly lead to dehydration and shock, contact a vet immediately and seek professional care.
4. Disorientation, Weakness, or Fainting
If your pet seems confused, unresponsive, or even collapses, this is a strong indication that their body temperature has reached a dangerous level. You should contact your vet or an emergency pet hospital without delay.
While in transit, keep the vehicle well-ventilated. Continue with gentle cooling techniques and try to keep your pet’s head slightly elevated. Speak to them softly, but avoid unnecessary handling, as this could cause further distress.
5. Muscle Spasms or Seizures
In the most severe cases of heatstroke, pets may experience muscle tremors, seizures, or even slip into a coma. These are critical warning signs and require immediate emergency care.
Make sure your pet is safe by clearing any objects they could injure themselves on during a seizure. Do not attempt to restrain them, instead, cushion their head and limbs gently if you can. Use fans or damp towels to help bring down their body temperature, but don’t pour water over their face or into their mouth.
Stay calm, but move quickly. If possible, have one person drive while another monitors your pet’s condition on the way to the vet. Call ahead so the clinic can be prepared when you arrive.

Leaving a pet in a hot car can have deadly consequences. While not specifically outlawed in the UK, doing so may lead to charges of animal cruelty if your pet becomes ill or dies as a result. If you spot a pet locked in a vehicle and showing signs of distress, call 999 immediately. Record the car’s registration number and location so you can provide full details to the authorities. Do not try to break the car’s windows unless directed by the police – it could put you at legal risk.
Hot cars are no place for pets, even on seemingly mild days. Always think twice before leaving your furry friend behind.