A new study by scientists at UNSW Sydney has shown that extreme heat can increase the chances of death in pet dogs by nearly 10%. The study warns that rising temperatures caused by climate change are not just harmful to humans but also to animals—especially dogs.

The research looked at 20 years of veterinary records from New South Wales, Australia. It found that dogs are at a much higher risk of dying on very hot days, especially during heatwaves. Since dogs cannot cool themselves like humans and rely on people for water, shelter, and care, they are more likely to suffer in extreme heat.

Dr. Joy Tripovich, lead author of the study, said, "This is particularly important as climate change is predicted to increase the frequency and intensity of heatwaves into the future."

Dogs face greater danger on holidays and sundays

The study found that the risk of death in dogs goes up by nearly 10% on days hotter than 32 degrees Celsius. For every degree above 25°C, the risk increases by 1%. But what surprised researchers the most was the number of dog deaths on public holidays and Sundays.

According to the study, “dog deaths skyrocket 155%” on public holidays, and “Sundays see mortality risk nearly double” compared to other days of the week. The reasons for this are still unclear but do not appear to be directly related to high temperatures.

The highest number of dog deaths was seen on New Year’s Day, followed by Christmas Day. Researchers think this might be because people take their dogs out more on these holidays. Many of these outings happen during the hottest times of the year.

"Another factor is that people are more likely to be more adventurous with their dogs on weekends and public holidays, and this can be associated with misadventure," said Dr. Anne Quain, a veterinarian and co-author of the study.

Call for awareness and action

Some dog breeds, such as Australian Stumpy Tail Cattle Dogs, Labrador Retrievers, Golden Retrievers, Border Collies, and Staffordshire Bull Terriers, were found to be at higher risk of heat-related illness.

Dr. Tripovich stressed the need for greater awareness, saying, “These findings underscore the urgent need for pet owners, veterinarians, and public health officials to take proactive measures—such as keeping dogs in cool, shaded areas during hotter days.”

She also said that more research is needed to understand why dog deaths rise so sharply on holidays and weekends.

As the planet continues to get warmer, this study is a reminder that even our pets need protection from extreme weather.

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