Boomer's panicked cries initially alerted attention before a passer-by realised he'd stopped moving.
A puppy had to bark and yelp for its life after it had been left during a braking car by its owner.
Boomer screeched as loudly as he could to urge the eye of passers-by in San Jacinto, California, earlier in the week, where temperatures reached almost 100°F (37°C).
After spotting the small guy barking from the parked motor, and fearing temperatures could also be even higher inside, a stranger managed to tug the dog to safety.
In a post to its Facebook page, Riverside County Sheriff's Office said the puppy had stopped moving but the one that pulled the pet pooch managed to perform life-saving aid.
Officers responded quickly to the decision and placed the dog in the back of an air-conditioned cruiser, at which era they noted the interior temperature of the parked car Boomer had been in was 130°F (55°C).
Little Boomer had to be saved from a hot car by a passer-by. Credit: Riverside County Sheriff's Department Little Boomer had to be saved from a hot car by a passer-by. Credit: Riverside County Sheriff's Department The owner of the car was later found and arrested for animal cruelty, and Boomer was given to the Ramona Humane Society where he was cared for. A spokesperson for Riverside County Sheriff's Office warned people about the importance of creating sure their pets weren't left alone in cars, especially on hot days. They said: "As a reminder, NEVER leave children or pets alone during a vehicle for even a flash. Temperatures inside a closed vehicle can reach quite 120°F within minutes, even with the windows partly opened on a cloudy day. "Pets, horses, and livestock also are vulnerable to difficulties from weather. Animals don't perspire and believe panting, wetting down, shade, cool earth and drink for cooling. "Animals cannot explain their needs, so it's up to people to ensures that their needs are met, especially during times of utmost or prolonged heat."
Last month, a customer at a retail park in Wales was forced to interrupt a window to save lots of the lifetime of a poor dog who had been shut inside on a hot day. The man, who spotted the dog sitting inside the vehicle at Fforestfach in Swansea, used a tool to smash the window before ensuring that he removed all of the glass shards before rescuing the animal. A video shot at the scene by fellow shopper Zoey Thornton shows the rescuer breaking the window before letting the dog out of the passenger side entrance, so it can breathe cool air once more . The 29-year-old claims the dog was in the car for 'at least 30 minutes' before it had been saved.