Why do dogs pant? What you should know
6/5/2026 | Written by Dilber Hussain | Advised by Evan Antin
Dog owners often notice behaviors that make them worried about the health and well-being of their canine companions. One of the most visible is panting: breathing heavily with an open mouth, which dogs often do after exercise or a long walk. When the temperature rises and they feel hot, they pant. When they're stressed or exposed to a new, unusual environment, they pant too. In short, panting is one of the main ways dogs cope with unexpected or demanding situations.
There are many reasons behind panting. Usually it's a normal way to regulate heat or deal with a new situation, and it's no cause for concern. But when you notice your dog panting excessively, it can be a sign of something more serious that should be addressed quickly. Below, we cover why dogs pant and what to do in each situation.
To dissipate heat
Unlike humans, dogs don't sweat across their bodies to cool down. Instead, they release excess heat by breathing rapidly with an open mouth. Panting from heat should be managed by providing shade, cool and dry spaces, and water to lower body temperature. Keep your dog hydrated, out of direct sunlight, and indoors during hot, sunny days.
To show excitement
Dogs also pant when they're excited. This is a normal response to something stimulating, like meeting new people or getting a treat. This type of panting tends to be rapid and shallow and is often accompanied by whining. It's temporary and subsides quickly once the excitement passes.
Stress or anxiety
A stressed or anxious dog may show rapid breathing and panting along with other signs such as wide, wary eyes, restlessness, looking around, and yawning. The first step is to identify the source of stress, comfort your dog, and provide a calm environment. If that doesn't help, take them to a veterinarian for a checkup.
Side effect of medication
Some medicines cause side effects like nausea, discomfort, drooling, and panting. If panting seems linked to a medication, consult your vet, who can adjust the treatment.
Heatstroke
Overheating, or heatstroke, causes heavy panting and can quickly lead to dehydration and death if untreated. It requires emergency veterinary intervention.
Overheated dogs pant very heavily and appear visibly uncomfortable. They may be restless, lying flat, or unresponsive because they're so focused on cooling down. You can prevent heatstroke on hot days by taking frequent breaks, seeking shade, and offering plenty of water. Avoid keeping your dog outdoors in high temperatures for long periods, don't exercise them during the hottest part of the day, and never leave your dog alone in a car.
Brachycephalic dogs (those with short snouts) must stay especially cool and hydrated on warm days, as they are more susceptible to heatstroke.
Pain
Pain is another contributing factor. Any physical source of pain or mental distress can cause panting. Take your dog to a veterinarian for a pain assessment and general checkup to evaluate the situation.
Underlying health conditions
Many underlying conditions can cause panting, including heart problems, pneumonia, gastric issues, circulatory problems, and respiratory issues. If there's no obvious cause for the panting, take your dog to a veterinary hospital without delay. The vet can run relevant tests to determine the cause and prescribe treatment before the condition progresses.
What to do when you notice your dog panting
When you see your dog panting and breathing with an open mouth, here's how to assess the situation.
Observe the dog and surroundings
Look closely at your dog and the environment. Is the dog showing other signs? Is the ambient temperature high? Is there a clear source of stress or excitement? If there's no obvious reason, the panting may be abnormal and warrants a vet visit.
Look for other signs and symptoms
Is your dog eating normally? Is it active or lethargic? Is there excessive barking or howling? Does the panting follow coughing? These details help determine whether something is wrong.
Changes in sound
Changes in the sound of your dog's panting shouldn't be ignored. Some dogs, particularly Labs and Golden Retrievers, are predisposed to a condition called laryngeal paralysis, a dysfunction of the vocal cords that prevents the airway from opening fully. The result is a characteristic raspy sound when they pant.
Similarly, short-snouted dogs like Pugs and Bulldogs can make abnormal snorting sounds while panting, due to a long soft palate or excess throat tissue that obstructs the airway. Dogs with either condition are more prone to heatstroke because they can't pant efficiently to cool down. Keep them cool and listen for these sounds when they pant.
Conclusion
Panting in dogs can be either normal or abnormal depending on the cause and any underlying health conditions. For pet owners, the key is knowing the difference. Remove the obvious, visible causes to give your dog relief, and address any underlying health conditions by visiting your veterinarian.