The state of Tennessee extended its "Good Samaritan law" this month, allowing people to smash a car window to save a dog from dying in a hot car.
“If you act reasonably, as any reasonable person would respond, you will not be at fault to save a life," says Nashville Fire Department Chief of Staff Mike Franklin. "You will not be at any fault to save a life and/or animals."
Apparently, acting "reasonably" includes first searching the for car's owner and calling police. I don't think I'd waste the time.
According to the Humane Society, "On an 85-degree day, for example, the temperature inside a car with the windows opened slightly can reach 102 degrees within 10 minutes. After 30 minutes, the temperature will reach 120 degrees. Your pet may suffer irreversible organ damage or die."
(photo by Nate Christenson)