31 Oct How Does Cooler Weather Affect Pets with Heart Disease?
As the seasons change and temperatures drop, many pet owners notice their pets becoming more energetic and playful. Cooler weather can be refreshing, especially after the heat of summer. But for pets living with heart disease, weather changes can have unique effects on their health. Understanding these effects can help you keep your pet safe and comfortable during the colder months.
Breathing and Circulation
Cooler air is often easier for pets to breathe, especially those who may struggle in the heat and humidity of summer. Dogs and cats with heart disease may show more tolerance for gentle activity during cooler weather. However, cold air can also trigger bronchoconstriction (airway narrowing) in some pets, particularly those with respiratory conditions in addition to heart disease. If your pet coughs more on chilly days or seems uncomfortable in cold air, it’s worth mentioning to your veterinarian.
Activity Levels
Pets often feel more energized in cooler weather, which may encourage them to run or play more than usual. While this can be a healthy outlet, it’s important to monitor pets with heart disease closely. Sudden bursts of activity may place extra strain on the heart. Short, controlled walks and supervised play are usually safer than strenuous or prolonged exercise.
Blood Pressure and Circulatory Stress
In colder weather, blood vessels naturally constrict to conserve body heat. This can increase blood pressure and add workload to the heart. For pets with advanced heart disease, this change may affect how efficiently the heart pumps. Monitoring for changes—such as increased fatigue, coughing, or breathing effort—is an important way to catch early signs of stress.
Cold Sensitivity and Comfort
Just like people, some pets with heart disease may feel the cold more strongly. Older pets, thin pets, and those on certain heart medications may have more difficulty regulating their body temperature. Providing a warm bed indoors, limiting time outside on very cold days, and using pet-safe sweaters or coats can help keep them comfortable.
Takeaway
Cooler weather often brings relief after the summer heat, but it also introduces new challenges for pets with heart disease. Monitoring your pet’s comfort level, adjusting activity appropriately, and keeping them warm indoors can go a long way in supporting their heart health through the season.
If you have questions about how the change in weather may affect your pet, or if you notice changes in their breathing, energy, or comfort, reach out to us or your veterinarian. Small adjustments can make a big difference in keeping your pet safe and happy year-round.
Images used under creative commons license – commercial use (10/30/2025) Photo by Kojirou Sasaki on Unsplash