It’s easy to forget things at this hectic time of year, your pets included.

But no matter how busy your Christmas preparations get it’s important never to leave your animals alone in the car – even if you are just popping out to get thatone last thingon the shopping list.

According to the RSCPA, it only takes six minutes for a dog to die in a hot vehicle, probably less than the time it takes to run in and out of the supermarket.

In fact the speed at which a parked car can reach dangerous temperatures on a hot day is alarming, and it happens even when the windows are cracked.

Did you know that even on a mild day, the temperature inside your vehicle can easily double the temperature outside?

Don't forget about your pet. Image via RSPCA.

At just 22 degrees, your car can heat up to 47.2 degrees in under an hour, according to research from Stanford University.

"If you are unsure about how quickly your car can heat up, test yourself,” Nadia Crighton from Pet Insurance Australia said.

"Sit in your car on a warm day with the windows slightly cracked and you will see how quickly you become uncomfortable… for a, this can be life-threatening."

So what can you do to keep your furry friends safe this summer? Well, the company has some advice:

And if you do see a sweltering pup in car that's not your own, here's how you can help.