Keeping Our Canines Cool and our Felines Frosty: Essentials of Heat Stroke Prevention in Dogs and Cats

Chocolate Labrador panting outdoors

When the freedom of summer arrives, we are all eager to get outside and enjoy the weather with our four-legged companions.  As temperatures climb, it is important to remember that both dogs and cats can be more vulnerable to the heat than we realize. Heat stroke, a potentially life-threatening condition, can develop in a relatively short window of exposure. Summer is an excellent time to review the signs of heat stroke, prepare to offer preventative measures, and learn about critical first aid for overheated pets.

Defining Heat Stroke

Heat stroke occurs when a pet's body temperature rapidly rises above normal levels (38.5-39.5°C) and exceeds their capacity to cool down efficiently. Dogs and cats are unable to effectively regulate their body temperature by sweating as humans do, making them more prone to heat-related illnesses. 

Dogs actively cool themselves by panting.  Evaporation from their tongues, combined with increased blood flow to their mouth and skin’s surface, helps to dissipate internal heat. Cats manage their temperature mainly by altering their behaviour.  They will seek cool places, decrease their physical activity, and stretch their bodies along cool surfaces.  They may also groom themselves to take advantage of the cooling effects of evaporating saliva.

High ambient temperatures, physical activity, and an inability to freely choose their physical location can overwhelm or impair a pet’s natural cooling abilities, leading to dangerous elevations of their body temperature.

High body temperatures can lead to severe illness like organ and gastrointestinal injury, neurological abnormalities, circulatory shock, and even blood clotting abnormalities.

Clinical signs of heat stroke in pets may include excessive panting, rapid breathing, drooling, increased heart rate, bright red or pale gums, vomiting, weakness, stumbling, and even collapse. Severe cases may lead to death if not promptly addressed.

Understanding Vulnerabilities

Several factors contribute to the vulnerability of dogs and cats to heat stroke. Anatomical features often determine a breed's susceptibility. Brachycephalic dogs like Bulldogs and Pugs have narrow, shortened nasal passages and elongated soft palates, making it challenging for them to regulate body temperature effectively. Similarly, double-coated cats and dogs have thicker hair that further hinders their ability to dissipate heat properly. Excessive body weight, age, and underlying medical conditions such as respiratory or cardiovascular illnesses also increase susceptibility.

Timing and Exercise Management

To prevent heat stroke during hot weather, it is vital to carefully plan exercise routines. Choose cooler periods of the day, such as early mornings or late evenings, to engage in physical activities with your pets. Ensure the duration and intensity of exercise align with the prevailing weather conditions. Avoid strenuous activities during peak temperatures, opting instead for shorter, less intense exercises. Always carry water to keep your pet hydrated during outdoor activities.  During extreme heat, swap outdoor exercise for indoor brain games and puzzles.

Preventive Measures

Choose exercise areas with ample access to shade. Shelter options, such as trees or covered patios, can help pets seek relief from direct sunlight. Water is an absolute necessity to prevent dehydration and regulate body temperature, so always ensure a continuous supply of fresh, cool water. Another effective method is to create designated areas with kiddie pools or misters, where our furry friends can splash or relax, aiding in cooling their bodies and reducing heat build-up.

Recognizing Heat Stroke and Taking Action

If you notice any potential signs indicating heat stroke in your pet, swift action is vital. Move your furry friend to a cool, shaded area immediately, ensuring good ventilation.  Aim one or more fans in their direction. Apply cool (not cold) water on their fur, particularly the head, ears, neck, and paw pads. However, never submerge them in ice water.  Cold water and ice packs, reduce blood circulation to the skin’s surface, and slow down the cooling process. Offer small amounts of water to conscious and responsive animals. Promptly contact your veterinarian for guidance, as even subtle symptoms can indicate a very serious problem.

Takeaway

As pet parents, we have a unique opportunity to control the environment and protect our dogs and cats from the dangers of heat stroke. Understanding the risks and taking preventative measures significantly reduces the likelihood of this life-threatening condition. By recognizing the susceptibilities of certain breeds and the impact of anatomical features, we can adjust our pet's routines accordingly. Carefully choosing exercise timings, providing shade, ample water, and incorporating additional cooling methods such as kiddie pools can all contribute to ensuring our pets remain safe during hot weather. Lastly, if heat stroke is suspected, quick action and veterinary intervention are critical to maximize the chances of a positive outcome.

Written by Dr. Jennifer Sperry, DVM

Source URL: https://www.petsplusus.com/blog/heat-stroke-prevention-dogs-cats