Last Updated: 24/08/2026
Dogs Locked in Hot Cars: What to Do and Legal Risks
Leaving a dog in a car can be fatal in minutes, even on mild days. Discover how to identify a dog in distress, the legal penalties involved, and who to call - from the police to the NRMA - to ensure a safe rescue without breaking the law yourself.
Author: Dr Teagan Lever BVSc (Hons)
Reading Time: 4 minutes - short read
Leaving a dog in a car is a dangerous gamble that can turn fatal in minutes and it can also land you in serious legal trouble.Despite frequent RSPCA warnings, many pet parents underestimate how quickly a car's interior turns life-threatening, even on a mild day. Before you head out with your dog this season, it's worth knowing the risks, the law, and safer ways to get your pet Summer Ready.
Why are cars so dangerous for dogs?
A car acts like a greenhouse, trapping heat and sending the internal temperature soaring. Research from the RACQ found the temperature inside a parked car can rise by 10 degrees in just 10 minutes.
Unlike humans, dogs sweat only through their paw pads and rely mainly on panting to cool down. In a hot, enclosed car, panting stops working and the dog is simply breathing in hot air which leads to rapid dehydration and heatstroke. Within minutes, this can cause permanent organ damage or death.
In clinic, we still see cases every summer where owners unknowingly assumed "just a few minutes with the windows cracked" was safe. Sadly it isn't, and by the time symptoms are obvious, the damage is often already underway.
Is it okay to leave a dog in a car with the windows down?
No. Leaving windows slightly open has a negligible effect on interior temperature. The metal frame and glass still trap heat effectively, and a car can reach life-threatening temperatures within minutes even with a gap for "fresh air."
How can you tell if a dog is in distress in a car?
If you encounter a dog in a vehicle, first assess their physical state. A dog suffering from heat exhaustion or heatstroke will often show:
Excessive panting: Heavy, laboured, or frantic breathing.
Hypersalivation: Excessive drooling or thick saliva.
Gum colour: Bright red, blue, or purple gums, indicating a lack of oxygen.
Vocalisation: Whining, barking, or scratching at windows to escape.
Lethargy: A non-responsive dog may still feel vibration so try banging firmly on the car frame.
Learn more about the Signs of Heatstroke in Dogs.
What should you do if you see a dog in a hot car?
If you're concerned for a dog's welfare, follow these steps to help safely and legally:
- Check for signs of life: See if the dog is alert and responsive.
- Locate the owner: Note the car's registration and description. If you're at a shopping centre, ask management to page the owner.
- Check the vehicle: Test the doors and windows to see if any are unlocked.
- Call the authorities: If the owner can't be found and the dog's condition is worsening, call police on 000, or contact the RSPCA or the NRMA. NRMA patrols can often perform emergency lock-out procedures, even if you aren't a member.
- Stay on the scene: Wait by the car until help arrives.
Can I break a window to save a dog in a hot car?
In Australia, breaking into a vehicle - even to save an animal - is generally considered a criminal offence (damage to property). The safest and most legal course of action is to contact the police or the NRMA immediately. They have the authority and tools to gain entry to the vehicle safely.
What are the Australian laws and penalties for leaving a dog in a car?
There's no single law that bans leaving a dog in a car under any circumstance. Instead, animal welfare/cruelty legislation in each state makes it an offence to cause - or allow - an animal to suffer or be placed at risk of suffering. Leaving a dog in a parked car so it overheats can meet that standard and lead to criminal charges.
Do Australian laws only apply on hot days?
No. Animal cruelty laws apply year-round. If a pet is found suffering or at risk due to confinement in a vehicle, the owner can be prosecuted regardless of the outside temperature.
Leaving a dog unattended in a car is never worth the risk, whatever the weather. If you spot a dog in distress, acting quickly by calling RSPCA, NRMA or 000, is the most effective way to help. For more ways to keep your dog safe as the weather warms up, check out our vets' pick of Spring and Summer Activities for Dogs.
References
RACQ, RACQ’s urgent safety warning as heatwave grips Qld, https://www.racq.com.au/news/motoring/mr030223-racqs-urgent-safety-warning-as-heatwave-grips-qld, accessed 15/01/2026
Animal Welfare Victoria, Travelling with dogs, https://agriculture.vic.gov.au/livestock-and-animals/animal-welfare-victoria/dogs/legal-requirements-for-dog-owners/travelling-with-dogs, accessed 15/01/2026
Shine Lawyers, Driving with Dogs in Cars, https://www.shine.com.au/resources/motor-vehicle-law/riding-in-cars-with-dogs, accessed 15/01/2026
RSPCA QLD, Travelling with pets: Do you know the law, https://www.rspcaqld.org.au/resources/pet-care/pets-and-the-law-MCJO42HSFQHBDBNA3YMGANFCAWDE, accessed 24/08/2026
RSPCA WA, Dogs in hot cars, https://www.rspcawa.org.au/dogs-in-hot-cars, accessed 15/01/2026
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History
Our experts continually monitor the health and wellness space and we update our articles when new information becomes available.
Mon 24 Aug 2026
Edited by Dr Angie Armstrong BVScDr Teagan Lever BVSc (Hons)
Head Veterinarian, BVSc (Hons)
Pet Circle's Head Veterinarian, Dr Teagan graduated from the University of Queensland in 2010 and went on to work in small animal and mixed practice in various locations around QLD & ACT before joining Pet Circle in early 2016. Dr Teagan has special interests in dermatology, nutrition and preventative health care. She feels privileged to witness the special bond people share with their pets on a daily basis and enjoys forming lasting relationships with pet parents and their fur children.
