Hot days, angry dogs: How environmental factors influence canine aggression HotDays Dogs Environmental Canine Aggression TemperatureImpact AirPollution DogBites UVIrradiation Heat SocietalBurden AnimalBehavior SciReports
By Dr. Chinta SidharthanJun 19 2023Reviewed by Benedette Cuffari, M.Sc. In a recent study published in Scientific Reports, researchers explore the association between an increase in dog bite incidents in eight cities in the United States and environmental factors such as temperature, ozone, and air pollution with particulate matter below 2.5 microns , while adjusting for seasonal factors, ultraviolet irradiation, precipitation, and calendar.
Aggression is believed to be linked to an imbalance between the hyper-responsivity brought about by anger-provoking stimuli in the limbic regions and top-down control in the prefrontal regions. External factors have also been known to influence aggression across species, with aggression in humans often rooted in complex sociological and psychological factors.
About the study In the present study, researchers used public records from eight U.S. cities on incidents of dogs biting humans. Statistics indicate that dig bites comprise 0.3% of the total emergency department visits and often result in trauma, cosmetic disfigurement, and amputation of fingers, with severe dog bites sometimes causing craniofacial injury and fatality.
Related StoriesMaximum daily temperatures and precipitation data were gathered from the Climatology Network, which is part of the National Oceanographic and Atmospheric Administration. UV index data were also obtained. The sensitivity analyses also indicated that the individual associations between the incidence of dogs biting humans and factors such as temperature, precipitation, ozone, and UV levels were stable and not influenced by the co-variance between these variables. The findings on increased aggression in dogs with increasing exposure to UV irradiation align with other studies that showed an increase in the steroid sex hormones in men and mouse models after exposure to UV light.
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