Dog Panting: Normal vs. Excessive, Causes & When to Worry 2026

Dog panting is normal after exercise or in heat — but excessive panting at rest, at night, or without apparent cause can signal pain, illness, anxiety, or a life-threatening emergency. Knowing when to act could save your dog’s life.

This guide is for informational purposes. Always contact your veterinarian directly for diagnosis and treatment.

Normal vs. Abnormal Dog Panting

Dogs pant to regulate body temperature — unlike humans, they don’t sweat through skin (only through paw pads), so panting is their primary cooling mechanism. Normal panting occurs after physical activity, in warm weather, or when excited. It’s typically rhythmic, easy, and stops once the dog cools down.

Abnormal panting is heavy, labored, constant, or occurs when the dog should be relaxed. Watch for panting that is louder than usual, appears effortful, happens at rest or night, or is accompanied by other symptoms like restlessness, drooling, pale gums, or lethargy. These patterns warrant investigation.

Common Causes of Excessive Dog Panting

Sources: VCA Animal Hospitals, American Kennel Club, Merck Veterinary Manual

Pain: An Often Overlooked Cause

Dogs are stoic and frequently hide pain — panting is one of their few reliable outward signals. Arthritis, abdominal pain, dental disease, injuries, and post-surgical discomfort all cause pain-related panting. If your dog pants excessively and hasn’t been active, pain should be near the top of your mental checklist. Changes in posture, reluctance to jump, or flinching when touched provide additional clues.

Anxiety and Stress

Many dogs pant when anxious — during thunderstorms, fireworks, car trips, or when left alone. This type of panting accompanies other calming signals like yawning, pacing, whining, and destructive behavior. Separation anxiety is a common trigger. Behavioral modification, calming products, or veterinary-prescribed anti-anxiety medications can help.

Cushing’s Disease (Hyperadrenocorticism)

Cushing’s disease causes the adrenal glands to overproduce cortisol, resulting in chronic excessive panting — particularly in middle-aged to senior dogs. The classic presentation includes panting, increased drinking and urination, a pot-bellied appearance, thinning hair, and lethargy. It’s diagnosed via blood and urine tests and is manageable with medication.

Emergency Warning Signs

Call an emergency vet immediately if your dog is panting and shows any of these signs:

• Gums are pale, white, blue, or grey (not pink)
• Breathing is labored, wheezing, or your dog is struggling to breathe
• Body temperature appears elevated (rectal temp above 104°F/40°C)
• Your dog collapses, stumbles, or cannot stand
• Abdomen looks distended and the dog is retching without producing vomit (possible bloat)
• Your dog has ingested a toxin or medication

Heatstroke is particularly deadly — a dog left in a parked car on a 70°F day can reach fatal internal temperatures within 10 minutes. Cool the dog with cool (not ice cold) water and get to a vet immediately.

Why Dogs Pant at Night

Nighttime panting that disrupts sleep is particularly concerning and has several possible causes. Cognitive dysfunction syndrome (dog dementia) causes confusion and restlessness in older dogs, often peaking at night. Cushing’s disease symptoms also worsen at night. Pain from arthritis or other conditions is often more noticeable when distractions are absent. Anxiety triggers like distant thunderstorms or unfamiliar sounds can also cause nighttime episodes. If your senior dog suddenly begins panting at night, a vet visit is warranted.

What to Do About Excessive Panting

Your approach depends on what’s causing the panting:

• If it’s heat: Move the dog to a cool environment, offer water, apply cool wet towels to the groin and armpits, and monitor rectal temperature. Above 104°F, go to the vet.
• If it’s anxiety: Identify and reduce triggers. Consider calming aids, behavioral training, or speak with your vet about medication.
• If it’s pain: Don’t give human NSAIDs (ibuprofen, aspirin) — they’re toxic to dogs. Contact your vet for appropriate pain management.
• If it’s a new pattern in a senior dog: Schedule a senior wellness exam. Blood work and urinalysis can screen for Cushing’s, thyroid issues, heart disease, and more.

Keeping a short video of your dog panting is extremely helpful for your vet, especially if the episodes are intermittent and your dog seems fine by the time you arrive at the clinic.

Frequently Asked Questions About Dog Panting