Why Dogs Pant in Heat and Stress

Why Dogs Pant

Panting is a normal way for dogs to release heat. Because dogs have limited sweat glands, rapid airflow over the moist surfaces of the mouth, tongue and airways helps cool the body. Dogs may also pant after exercise or during excitement, fear and anxiety.

Panting Caused by Heat

A warm environment or physical activity commonly causes panting. Normal panting should gradually ease after the dog rests in a cool, well-ventilated place and has access to fresh water.

Some dogs overheat more easily, including puppies, senior dogs, overweight dogs, thick-coated breeds and flat-faced breeds such as Bulldogs and Pugs.

Signs of Dangerous Overheating

• Heavy panting that does not improve with rest
• Excessive drooling or thick saliva
• Bright red, pale or blue gums
• Weakness, stumbling or collapse
• Vomiting, diarrhea, confusion or seizures

Heatstroke is a veterinary emergency. Move the dog into a cool area, begin gentle cooling with cool—not ice-cold—water, and contact a veterinarian immediately. Do not leave a dog in a parked vehicle, even for a short time.

Panting Caused by Stress

Dogs may pant when frightened, anxious or overstimulated. Common triggers include thunderstorms, fireworks, travel, veterinary visits, unfamiliar surroundings and separation from a caregiver.

Stress-related panting may occur with other body-language signals:

• Pacing or inability to settle
• Trembling, whining or hiding
• Repeated yawning or lip licking
• A tucked tail or lowered posture
• Wide eyes, flattened ears or avoidance

When possible, move the dog away from the trigger and provide a quiet, familiar place. Remain calm and allow the dog to choose whether to seek contact. Repeated or severe anxiety should be discussed with a veterinarian or qualified behavior professional.

When Panting May Signal Illness

Unexplained or persistent panting can also accompany pain, fever, medication effects, respiratory disease, heart disease, anemia or hormonal disorders. Panting at rest in a cool room, especially when it is new or unusually intense, deserves veterinary attention.

Seek urgent veterinary care if panting occurs with labored breathing, collapse, pale or blue gums, a swollen abdomen, repeated unproductive retching, severe weakness or known heat exposure.

What Owners Can Do

• Provide shade, ventilation and fresh water.
• Avoid strenuous activity during the hottest part of the day.
• Watch how quickly breathing returns to normal after rest.
• Record when panting occurs and note any accompanying symptoms.
• Contact a veterinarian when panting is sudden, persistent or different from the dog’s normal pattern.