The woman who posted the photo is an animal control officer from the Upstate, who spotted the car on her way back from vacation this past weekend.
"I was shocked. The luggage rack that the dog was on, had no luggage on it. So my thought process was, â??well why couldn't you trade the luggage that's inside the vehicle, for the dog that's outside of the vehicle,'" said Hubbard.
Hubbard told the NY Daily News that a temperature gauge in her car reported it was 94 degrees outside.
South Carolina Highway Patrol spokespeople said that no citations were given.
"I'm sure there are plenty of animal rights groups that would not agree with that, it's certainly probably not the safest place for your pet to be, but there is no law for that. If somebody chooses to do that, they are allowed to do that," said Cpl. Bill Rhyne, with South Carolina's Highway Patrol.