Panting is normal when dogs are hot, exercised, excited, or a little stressed. They dissipate heat primarily by panting because they have limited sweat glands. After play on a warm day, elevated breathing rate often settles within minutes in a cool, shaded spot with water available.

Excessive or inappropriate panting can signal heat-related illness, especially in hot humid weather or when dogs are left in cars. Brachycephalic breeds with short muzzles overheat faster and may pant heavily with mild exertion or stress. Heavy panting with drooling, weakness, vomiting, or collapse is an emergency.

Pain, nausea, and certain hormonal or metabolic conditions can increase panting. Heart and lung disease may show up as labored breathing or panting at rest. Anxiety and phobias often cause prolonged panting even when temperature is mild.

Note context: is panting new, worse at night, or paired with cough, blue-tinged gums, belly distension, or reluctance to lie down? Those patterns warrant prompt veterinary evaluation. Your veterinarian can examine the airway, heart, and abdomen and discuss imaging or lab work if indicated.

Never ignore panting in a hot car or in a dog struggling to breathe. When heat is a factor, begin cooling per veterinary guidance and seek immediate care.

This summary supports awareness and is not a diagnostic tool.