Why Do Dogs Pant?

Panting is one of the primary ways dogs regulate their body temperature and respond to their environment, says Wendy Hauser, DVM, founder of Peak Veterinary Consulting in Colorado.  

Here are the most common reasons dogs pant—and why it’s usually completely normal. 

Panting helps release excess body heat, Dr. Hauser explains. It’s also normal to pant after exercise, play, or when they’re feeling excited. 

Panting can be a response to emotional stress. If your dog is nervous—like during a thunderstorm or when left alone—you may also notice pacing, whining, or a tucked posture. 

Dogs sometimes pant when they’re uncomfortable. Look for other clues, like restlessness, whimpering, or licking a sore spot. 

Carrying extra weight makes it harder to regulate body temperature and can put strain on the heart and lungs, which may lead to more frequent panting. 

Senior dogs may pant more due to age-related changes, including anxiety, arthritis, or reduced sensory awareness. 

Short-nosed (brachycephalic) breeds like Bulldogs, Pugs, and Boxers tend to pant more because their airways are narrower, making cooling less efficient. 

Some medications, such as prednisone, can increase panting as a side effect. If you notice new or persistent changes after starting a medication, check with your veterinarian. 

Panting is usually normal—but if it’s intense, sudden, or paired with other symptoms, it can signal a problem. Common medical reasons include: 

• Heatstroke: Look for heavy breathing, bright red gums or tongue, thick saliva, vomiting, weakness, or uncoordinated movement. This is an emergency—seek veterinary care immediately. 
• Sudden illness or toxin exposure: If panting starts abruptly and your dog also seems weak, vomits, or struggles to breathe, head to an emergency vet. 
• Ongoing medical conditions: Issues like heart disease, Cushing’s disease, anemia, or respiratory disorders can increase panting—especially when paired with pale gums, lethargy, increased thirst, or reduced activity. 

If your dog is panting because they’re hot, try these simple steps: 

• Offer fresh, cool water at all times. 

• Move to shade or indoors to lower their body temperature. 
• Use cooling gear, like a cooling vest, to promote airflow. 

• Apply a cool (not ice-cold), damp towel to the body. 
• Create airflow with a fan or air conditioning. 
• Let them splash safely, such as in a shallow pool. 

• Plan walks during cooler hours, like early morning or evening. 

Keeping your dog comfortable in warm weather helps reduce normal heat-related panting and lowers the risk of overheating.  

In most cases, panting is just part of being a dog. Understanding what’s normal for your pup makes it easier to spot when something’s off.