Many people love to take their dogs with them everywhere. Sometimes, you need to leave your dog in the car for a short time. But how long can a dog safely stay in a car? This is very important to know. Dogs can get very sick if left alone in a car too long.
Why Is It Dangerous for Dogs to Stay in a Car?
Cars can become very hot or very cold quickly. Dogs feel these changes more than people do. When it is hot outside, a car can heat up fast. Even if the windows are open, the temperature inside the car can rise very fast.
Dogs cannot cool their bodies like people. They mostly cool down by panting. But in a hot car, panting is not enough. This can cause heatstroke. Heatstroke is very dangerous and can make dogs very sick or even cause death.
How Fast Can A Car Heat Up?
On a warm day, a car can get dangerously hot in just 5 to 10 minutes. For example:
| Outside Temperature | Car Temperature After 5 Minutes | Car Temperature After 30 Minutes |
|---|---|---|
| 70°F (21°C) | 99°F (37°C) | 109°F (43°C) |
| 85°F (29°C) | 109°F (43°C) | 123°F (51°C) |
| 90°F (32°C) | 114°F (46°C) | 127°F (53°C) |
As you can see, even on a mild day, the car can get very hot. This is dangerous for dogs.
How Long Can a Dog Stay in a Car Safely?
The safest answer is: very short time only. Dogs should not be left alone in a car for more than a few minutes. This is true even if the windows are open or if it is cool outside.
In hot weather, do not leave your dog in the car at all. Heat can build up quickly and harm your dog.
In cool weather, dogs can stay in the car longer, but it is still best to keep the time short. If your dog is left in a cold car too long, it can get too cold and catch a chill.
Dogs At Higher Risk
Some dogs are more likely to get sick in cars. These include:
- Short-nosed breeds like pugs, bulldogs, and boxers.
- Puppies because they cannot control their body temperature well.
- Older dogs who may have health problems.
- Dogs with thick fur or those that are overweight.
If your dog is in one of these groups, be extra careful and never leave them alone in a car.
Signs Your Dog May Be in Trouble in the Car
It is important to know the signs of heatstroke or stress in dogs. Look for these signs:
- Heavy panting or difficulty breathing
- Excessive drooling
- Bright red or pale gums
- Vomiting or diarrhea
- Weakness or collapse
- Confusion or unresponsiveness
If you see any of these signs, get your dog out of the car immediately. Cool them down with water and call a vet.
Tips for Leaving Your Dog in a Car Safely
If you must leave your dog in a car for a very short time, follow these tips:
- Park in the shade to keep the car cooler.
- Leave windows open a little to allow air flow.
- Leave water for your dog to drink.
- Only leave your dog for 5 minutes or less.
- Check on your dog often.
- Never leave a dog in a car when it is hot outside.
Legal Issues About Leaving Dogs in Cars
In many places, it is illegal to leave a dog in a car when the weather is very hot or very cold. Laws protect pets from being hurt by heat or cold.
If you see a dog alone in a hot or cold car and the dog looks sick, call the local animal control or police. They can help the dog quickly.
Better Alternatives to Leaving Your Dog in the Car
Instead of leaving your dog in the car, try these ideas:
- Bring a friend to stay with the dog.
- Take your dog with you inside the store if allowed.
- Use doggy daycare or pet sitters.
- Plan your trips so your dog is never alone in the car.

