If you own a dog, and many of you do, when it gets to be anywhere above basically 23 C don't and I repeat don't leave your dog in the car. For any amount of time.
Today it is around 38 C with the humidex and on our way back from walking our pug Zoe I spotted a dog in a car. Yes the window was cracked open, and yes it was in the shade, but I can assure you that the temperature in the car was well above 40 C. It made me sick. I came home and called the police right away. It is so sad since the dispatcher told me they already had countess calls today of stupid people leaving dogs in cars. Dogs in cars in this heat die.
No dog deserves an owner that selfish. When you have a pet they rely on you, your love, your compassion, your wisdom. Don't let them down.