Some groups use humor to try to get the point across, but the message is the same: don't do it!

If you still think it's okay to leave them alone "just for a few minutes", take a look at how long a human can stand being in a car. The internal temperature of the car quickly goes from 75F (24C) to 104F (40C).

Does it really need to be stated (again) that you shouldn't leave your pets alone in a hot car? It's the "hot" part of the equation that matters, not how many pets you leave. We've known for decades that it's a bad idea to leave pets in hot vehicles. Just check out this retro PSA from the Humane Society: So even if the temperature outside seems mild, don't think that means it's safe to leave you car alone.  The interior of your car can heat up quickly -- just think about how hot it is when you come back to the car after 10 or 15 minutes away.  A dog or cat can sustain serious internal damage in a matter of minutes if the internal temperature of the car gets above 100F and every year there are reports of animals dying when left in a car unattended. Just don't.