Never leave your pets in a parked car. Not even for a minute. Not even with the car running and air conditioner on. On a warm day, temperatures inside a vehicle can rise rapidly to dangerous levels. 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.
For more heat related, pet safety tips, go to: http://www.humanesociety.org/animals/resources/tips/pets_safe_heat_wave.html?credit=web_id353383049