Veterinarian Dr. Ernie Ward stays in a parked car on a summer day to prove how dangerous it is to leave a pet inside a car. The car reaches 117 degrees within 30 minutes with all four windows opened 1 to 2 inches. This is extremely dangerous as dogs and cats don't perspire the same way humans do. The only way that Dr. Ward could have made this even more realistic is if he were wearing a coat, hat, mittens, etc. Imagine how miserable it would be to sit in a 117 degree parked car and be covered in fur; that is what pets experience.