Warmer temperatures often mean more car rides, more errands, and more dogs tagging along with their families. But this time of year also brings one of the most serious and preventable warm-weather risks for dogs: being left in a parked car.
Many people do not realize how quickly a vehicle can become dangerous. According to the American Veterinary Medical Association, the inside of a vehicle can rise about 19°F in just 10 minutes, and on a 70°F day, the temperature inside can climb above 110°F. The CDC and NHTSA also warn that cracking the windows does not make a parked car safe.
Dogs do not cool themselves the way humans do. They rely mainly on panting, which is far less effective when they are trapped in a hot, enclosed space. Once their body temperature starts rising, they can quickly move from heat stress to heatstroke.
Inside a parked car, heat builds fast and has nowhere to go. That means a dog can be in danger even during a short stop. The risk is even higher for:
These dogs may struggle even sooner in rising temperatures.
Very fast.
The CDC says temperatures inside a car can rise almost 20°F within the first 10 minutes, even with a window cracked open. NHTSA also warns that an outside temperature in the mid-60s can push the inside of a vehicle above 110°F. That is why no errand is truly quick enough to make leaving a dog in the car safe.
No.
This is one of the biggest misconceptions dog owners still hear. The CDC specifically warns that leaving a window open is not enough, and the AVMA advises pet owners not to rely on cracked windows or a brief absence to keep pets safe.
Heatstroke is a medical emergency. Early warning signs can appear quickly and should never be ignored.
The AKC Canine Health Foundation notes that dogs with heatstroke may show panting, drooling, red mouth tissues, vomiting, staggering, seizures, and collapse as their condition worsens.
The safest rule is simple: never leave your dog alone in a parked car.
Even caring dog owners can underestimate how fast conditions change. An errand takes longer than expected. A line gets backed up. A quick stop turns into several minutes. But inside a closed vehicle, a dog may not have that time safely.
Warm spring and early summer temperatures can catch people off guard because the day may not feel extreme. But as the CDC explains, even when it feels cooler outside, cars can still heat up to dangerous temperatures very quickly.
If you see a dog alone in a parked car on a warm day, take it seriously.
Fast action matters because the dog’s condition can worsen in minutes as temperatures rise inside the vehicle. NHTSA stresses how quickly enclosed vehicles can reach dangerous temperatures.
Leaving dogs in hot cars is one of the clearest examples of a danger that can be prevented through awareness. When people understand how fast a vehicle heats up and how little protection cracked windows provide, they are more likely to make safer choices.
This topic is also deeply personal to Reign for Change. The organization was founded in memory of Reign, a beloved Doberman Pinscher whose death after being left in a closed vehicle on a very hot day became the reason for this mission of education, awareness, and advocacy. Reign’s story is a reminder that these risks are real and that sharing practical safety information can help protect more dogs.
Please share this article with fellow dog owners, friends, family, handlers, and anyone who travels with dogs during warmer weather. Helping more people understand this risk is one meaningful way to keep more dogs safe.
