Why Is My Dog Panting More Than Usual?

Your dog is just lying there. No walk, no sunshine, not a single thing happening — and yet they’re panting like they just finished a sprint across the yard. You watch for a minute. Then two. They don’t stop. And now you’re Googling at 10 PM wondering if something is actually wrong.

So why is your dog panting more than usual? Sometimes the answer is boring: a warm room, a stressful afternoon, a dream they were clearly winning. But sometimes the panting is your dog’s way of saying something hurts, something is wrong, or something needs a vet’s attention this week and not next month. The hard part is that panting looks almost identical whether a dog is hot, scared, or in pain — same open mouth, same rolling tongue — and the cause behind it changes everything about what you should do next.

Here’s what shapes whether the extra panting is nothing or something worth acting on: - Whether it’s happening during heat and exercise, or completely out of context - Your dog’s age — senior dogs pant for very different reasons than young dogs - Whether any other symptoms are showing up alongside it (restlessness, gum color change, drinking more water, limping) - Any medications your dog is currently on - Health conditions already in the picture, or ones that might be developing quietly

Understanding why your dog is panting more than usual

Panting is how dogs regulate body temperature. Dogs don’t sweat through their skin the way we do — sweat glands in dogs are mostly limited to their paw pads, which don’t do much on a hot afternoon. So instead, they breathe hot air out and cool air in, rapidly evaporating moisture off the tongue and airways.

That’s the normal version. That’s just physics.

The trouble starts when the panting doesn’t match the situation.

1. Heat and exercise — PetMD notes that after physical activity or in warm temperatures, panting is your dog’s primary cooling mechanism. This kind should settle within 10 to 15 minutes of rest in a cool space. If it doesn’t slow down — that’s your first signal something else is going on.

2. Stress and anxiety — dogs pant when they’re anxious. Thunderstorms, fireworks, vet visits, car rides, a houseguest who smells like another dog. Stress panting is typically fast and shallow, and comes with other body language: wide eyes, pinned ears, tail tucked, pacing, lip licking. If there was an obvious trigger and the panting settled once it passed, you’ve got your answer.

3. Pain — this one gets missed more often than it should. Dogs are hard-wired to hide discomfort; showing weakness isn’t in their nature. Hill’s Pet explains that sudden panting without an obvious environmental cause is one of the strongest indicators a dog might be hurting — especially if nothing in their environment changed, or if the panting started after a fall, after surgery, or alongside a flaring chronic condition like arthritis. No whimpering required. Just panting.

4. Medical conditions affecting the organs — Cushing’s disease, heart disease, respiratory problems, anemia, fever. These can all drive a dog to pant more than usual without any external trigger, sometimes for weeks before an owner realizes something has been quietly building. The AKC’s overview of Cushing’s disease in dogs lists excessive panting as one of the most consistent early signs — typically paired with increased thirst, a pot-bellied look, more frequent urination, and coat thinning. If your dog seems to pant all the time for no obvious reason, a basic blood panel is worth having done.

5. Medications — steroids are the big one. Prednisone, prednisolone, dexamethasone. These commonly cause increased panting as a direct side effect, even at routine doses. If your dog started a new prescription in the last two weeks and the panting ramped up around the same time, that’s your first hypothesis, not a mystery.

6. Heatstroke — not just being warm. Actual heatstroke is a medical emergency that starts with heavy panting and can spiral fast. Cornell University’s Canine Health Center puts it plainly: dogs can die from heatstroke within minutes, and panting that won’t settle — especially in a dog who seems confused, is drooling heavily, or has bright red gums — is a same-hour emergency vet visit. No waiting.

Which dogs are most prone to excessive panting

All dogs pant. Some dogs pant considerably more, and knowing whether yours falls into one of these groups changes how quickly you should act.

1. Brachycephalic breeds — Bulldogs, Pugs, French Bulldogs, Boxers, Boston Terriers, Shih Tzus. These breeds have compressed airways by design, which means they work harder to breathe even on mild days. Their baseline panting rate runs higher than other dogs, and their heat tolerance is meaningfully lower. If you have a Frenchie who seems to pant more than usual on a 75°F afternoon, take that seriously faster than you would with a Labrador doing the same thing.

2. Senior dogs — older dogs pant for more reasons. Arthritis pain that builds slowly. Cognitive dysfunction syndrome — the canine equivalent of dementia — which disrupts sleep patterns and causes nighttime restlessness and panting that owners often mistake for anxiety. Heart and respiratory conditions that develop quietly over time. A 10-year-old Golden Retriever who suddenly pants more at night than they used to isn’t just aging — that’s a symptom worth investigating.

3. Overweight dogs — extra body weight makes thermoregulation harder. A dog who’s 20% above their healthy weight will pant more during walks, take longer to recover, and feel warmer at rest. Not automatically a crisis, but a sign the weight issue is affecting daily quality of life in ways that are worth addressing.

4. Dogs on long-term steroid medications — if your dog is managing allergies, immune conditions, or inflammatory disease with ongoing steroids, panting is likely a side effect you’ll see consistently. The question is how much is expected versus how much is excessive, and your vet is the one to calibrate that.

5. Dogs with undiagnosed Cushing’s disease — more common than most owners expect, particularly in middle-aged to senior dogs. Dachshunds, Poodles, Beagles, and Boxers are disproportionately represented in Cushing’s diagnoses. The panting is often persistent, worse at night, and paired with subtle changes the owner might have been attributing to “getting older”: drinking more, peeing more, belly looking rounder. It’s not age. Get the bloodwork.

Types of panting and what they’re actually telling you

Not all panting looks the same if you watch closely.

1. Normal thermoregulation panting — mouth wide open, tongue out fully, expression relaxed. Rhythmic, steady. Starts after exercise or in heat, slows as the dog cools down. If this is all you’re seeing, nothing’s wrong.

2. Stress and anxiety panting — faster, shallower. The dog can’t settle: pacing, circling, pressed against your leg, or hiding behind furniture. Eyes usually wide. Often happens before, during, or just after known stressors. Settles when the trigger goes away — that’s the key marker.

3. Pain panting — harder to catch because the dog may otherwise look calm. It tends to be irregular rather than rhythmic. Not linked to a clear stressor. The dog might be reluctant to move, keep shifting position like they can’t get comfortable, or not eat normally. Look at the full picture. The panting alone won’t tell you.

4. Medical panting — this is the type that warrants the fastest action when you can’t explain it. No heat, no stressor, nothing happened, and it’s been going on for a day or two. Something medical is on the table.

5. Emergency panting — loud, labored, non-stop. The dog can’t settle. They may stumble or seem confused. Gums look pale, white, blue, or bright red instead of the normal healthy pink. Maybe vomiting. Garden State Veterinary Specialists lists gum color change, disorientation, collapse, and seizures as the major warning signs that turn panting into an emergency. If you’re seeing any of those, this is a now problem, not a morning problem.

How to assess what you’re actually seeing

Before panicking — and before deciding it’s definitely nothing — here’s how to work through it.

1. Start with context — was it hot? Did they exercise? Was there a thunderstorm last night, a strange visitor, or anything out of the ordinary? If there’s an obvious cause and the panting settled within 15 to 20 minutes, you’re most likely fine.

2. Look at the gums — pull back the lip gently. Healthy gums are pink and moist. Pale, white, blue-tinged, or brick-red gums mean something is wrong. Stop reading and call a vet right now. Gum color is the fastest way to tell whether panting is a stress response or a circulation problem.

3. Take a temperature if you can — a normal dog’s temperature sits between 101°F and 102.5°F. Anything over 104°F is a fever. Over 106°F is a life-threatening emergency. Not always practical at home, but if you have a rectal thermometer and a cooperative dog, it gives you real information instead of guessing.

4. Look for anything else that’s off — limping, drinking more water than usual, urinating more, restless at night when they used to sleep through, changes in appetite. One extra symptom alongside unexplained panting moves this from “watch and wait” to “call the vet this week.”

5. Think through recent changes — new medication, new food, new environment, a new person or animal in the house. Dogs don’t usually start panting more for absolutely no reason. Something shifted. Finding what shifted often finds the cause.

Tips for managing a dog who’s panting too much

• Cool the environment before anything else — if there’s any chance the panting is heat-related, don’t wait to find out. Air conditioning, a cooling mat, fresh water in a shaded spot. Do it proactively.
• For anxiety panting: remove the trigger if you can. Comfort your dog calmly, but don’t pile on treats and fuss in the moment — excessive reassurance during anxiety can actually reinforce the behavior over time. Calm, quiet, and steady is the goal.
• Never stop a medication without calling your vet first — some drugs genuinely can’t be discontinued abruptly. If a steroid seems to be causing the panting, call and ask what’s expected versus what’s concerning.
• Track when the panting happens. Time of day, temperature, what was happening beforehand. Three days of notes is worth more at the vet than your best guess.
• Cooling measures if you suspect heat: move to a cool space, apply room-temperature water to the paws, belly, and neck. Not ice-cold — that constricts surface blood vessels and slows cooling. Cool and steady, then get to a vet if it doesn’t resolve fast.
• Never leave a dog in a parked car. The interior temperature can hit 120°F within 20 minutes on a mild day. Brachycephalic dogs can be in distress in under 5 minutes.

When panting is completely normal

Honest list, no padding.

• After a run, a game of fetch, or any vigorous exercise — this is exactly what panting is for.
• When your dog is excited — at the leash coming out, at the doorbell, at the sight of a known friend. This panting has a wagging tail attached to it and settles within minutes.
• On a warm day, when the dog has access to water and shade and isn’t showing distress.
• If your dog is a known anxious type and a known stressor was present — as long as the panting settles once the trigger is gone, that’s normal for that dog.
• Puppies and newly adopted dogs in the first week or two at home — adjustment-period anxiety panting is real and usually resolves as the dog settles in.

When to call your vet

This is where I don’t hedge.

• If my dog panting more than usual has been happening for more than 48 hours without a clear cause — that’s a vet call. Not “let’s see how the weekend goes.”
• If gum color looks off in any way — pale, white, blue, or bright red.
• If you suspect pain — unexplained panting combined with restlessness, reluctance to move, changes in posture, or not eating normally.
• If your dog is on steroids and the panting has gotten significantly worse than their established baseline.
• Any brachycephalic breed showing panting that feels worse than their normal — Pugs and Bulldogs can slide from “a bit extra” to respiratory distress faster than other breeds.
• Suspected heatstroke — dog can’t settle, gums look wrong, seems disoriented, or has been left in the heat for any length of time. Go to an emergency vet. Don’t wait for your regular clinic to open.
• Senior dogs with new panting patterns, especially at night — this warrants a checkup for pain, cognitive dysfunction, or cardiac and respiratory issues.

Conclusion: most panting is fine — but the exceptions matter a lot

Most of the time when a dog is panting more than usual, there’s a simple explanation on the other end: it was warm, they got excited, someone knocked on the door. That kind of panting resolves on its own and doesn’t mean anything is wrong. But the cases where panting shows up without a reason, where it doesn’t resolve, or where something else seems slightly off — those deserve real attention. Check the context, check the gums, think about what changed recently. You know your dog’s normal better than anyone. Trust that knowledge. When the panting doesn’t fit the situation, make the call.

References

1. PetMD — Why Do Dogs Pant?
2. Hill’s Pet — Understanding Dog Panting: When Should You Worry?
3. AKC — Cushing’s Disease in Dogs
4. Garden State Veterinary Specialists — When Your Dog’s Panting Becomes an Emergency
5. Cornell University College of Veterinary Medicine — Heatstroke: A Medical Emergency