Why is my dog panting so much when it isn't hot?
A dog who pants when it isn’t hot, hasn’t just been running and hasn’t just eaten is usually showing stress, fear or pain. You recognize stress panting by the face: the corners of the mouth pulled back, a tight and fast pant, and a worried look, often with restlessness alongside it. Cooling panting is relaxed and loose, with a soft mouth. You never make that distinction from the panting alone, but from the rest of the body and the situation. And you always rule out pain with your veterinarian first, because dogs hide pain by nature.
In short
Cooling panting: loose, soft mouth, relaxed body, after exertion or in the heat.
Stress panting: corners of the mouth pulled back, tight pant, worried face, restlessness, often with no trigger that you can see.
Pain panting looks like stress panting. If the panting continues with no explanation: see your veterinarian, and keep asking questions.
Panting is a late signal. It shows up only after lip licking, yawning and looking away have gone unheard. Distance and rest are the answer by then.
Panting while you are gone, but not while you are home, points toward separation anxiety.
The early signals that come before panting are shown in the free webinar.
Cooling, stress or pain?
In our course, panting sits with the behaviors that are normal but can also regulate stress, and the instruction that goes with it is this: tell stress panting and pain panting apart from cooling by reading the other signals. Here is how you do that.
Cooling | Stress | Pain | |
|---|---|---|---|
When | In the heat, after running or playing | Without heat and without exertion, often with no trigger that you can see | Also at night, at rest, or after movement that used to be no problem |
The mouth | Hangs loosely open, the tongue rests relaxed | Corners of the mouth pulled back, pant tight and fast, tension around the muzzle and forehead | Looks like stress panting |
The rest of the body | Loose, he lies down and the panting settles | Worried frown, whale eye, ears back, cannot lie down, paces back and forth, sometimes drooling | Stiff or limping, unwilling to go on, less tolerant of touch, refusing exercises |
What you do | Water and shade | Distance, rest, take the trigger away | Veterinarian, and keep asking if the first check turns up nothing |
In summary: cooling panting belongs with heat or exertion, with a loose open mouth and a dog who lies down; stress panting comes without heat or exertion, with the corners of the mouth pulled back, a tight and fast pant, whale eye and an inability to lie down; pain panting looks like stress panting but also happens at night and at rest, often with stiff movement or less tolerance for touch. In the heat you give water and shade, with stress you give distance and rest, and with pain you go to the veterinarian.
If you are unsure, the order is always the same: the veterinarian first, then the behavior. Pain plays a part more often than owners think. In the review study by Mills and colleagues (2020), pain was a factor in 28 to 82 percent of referred behavior cases.
Why stress causes panting
Stress is an umbrella term for fear, frustration, pain and too much excitement, and the body produces the same stress hormones during excitement as it does during fear. Panting belongs to the phase where the tension is genuinely climbing. On the traffic light we use in our course it is orange, after the green calming signals (looking away, slowing down, sniffing) and the yellow transition phase (lip licking, yawning, ears back, holding the breath). The whole traffic light, from green to red, is worked out in How to recognize stress in your dog.
So a dog who pants when nothing appears to be wrong is already well into the tension. That can come from something in the situation (visitors, another dog, a thunderstorm in the distance that you cannot hear yet) or from a full stress bucket: stress hormones need hours to days to break down, so a busy day keeps working on him long afterward.
The situations where you see it most
Home alone. Panting and drooling when it isn’t hot, while your dog does not do this when you are home, is one of the clearest signs of separation anxiety. A camera makes it visible. Read more in Separation anxiety in dogs: recognizing the symptoms.
Sound. With thunderstorms, fireworks and loud noises, stress panting is one of the first signs, together with shaking, pacing and hiding. See also Why is my dog shaking?
Excitement. With the ball, with visitors, in the car. What looks like enthusiasm is often tension that has climbed too far: shrill barking, whale eye, ears pinned back, reckless jumping and panting. If you keep stimulating him, your dog can tip over into obsession.
The walk. A dog who pants on the walk while the weather is cool is telling you that the environment is too much: too busy, too many dogs, too little space.
At night. Panting at night without heat is a reason to think about pain.
What you do
Rule out pain and heat. See your veterinarian for panting that persists or has no explanation, even if the first check turns up nothing. A quick exam does not rule out pain.
Create distance or remove the trigger. Move to a quieter spot, ask visitors to sit down, put the ball away, close the curtains during a thunderstorm.
Give rest and time. Stress hormones do not drop in a minute. A low-stimulus place, a safe haven where he is left alone, and no new activities.
Calming activities, but only once he is ready for them. Sniffing, licking and chewing produce calming hormones. But do not give a dog who is still high in stress something to chew: stressed dogs gulp and can choke. Let him come down first, then offer something easy.
Look at the whole day. Is he sleeping enough? Are there chasing games feeding the excitement? An activity diary with green, orange and red shows you where the panting is coming from.
Do not correct, do not ignore. A panting dog is telling you something. Punishment adds stress; ignoring him leaves him on his own.
From our practice
When we work with dogs who cannot be left alone, the camera is the first tool we reach for, and panting is the signal owners most often notice for the very first time on that footage. The dog who was “just sleeping” at home turns out, on video, to pace back and forth for the first ten minutes, panting and drooling, and only then flop down. Not because it was hot, but because the door closed. Without a camera that panting would never have been noticed, and all that would have been left was a dog who was “just” restless in the evening.
When to get help
For panting that starts suddenly, happens at night, or continues while nothing exciting is going on: see your veterinarian, and ask for further investigation if the first check shows nothing. For panting that comes with panic (fleeing, self-injury, refusing food) or with being alone: see a qualified professional, and do not experiment on your own.
Frequently asked questions
My dog only pants when I am gone. What does that mean?
Behavior your dog only shows when you are not there, and that he does not settle down from, points toward separation anxiety. For now, do not leave him alone if he panics, and address the cause.
He pants and wags when visitors arrive. Surely that is happiness?
A wagging tail means excitement, not necessarily happiness, and excitement is hormonally the same as stress. Look at the corners of the mouth and the rest of the body. Ask visitors to sit down and let your dog decide about contact himself.
He pants at night. Is that stress?
Think first about pain or about being too warm. Panting at night without heat is a reason to call your veterinarian.
Does distracting him with a treat help?
Briefly, but it solves nothing, and a dog who is high in tension often will not even take food anymore. Distance and rest work; the treat comes after that.
Sources
Mills, D.S. et al. (2020). Pain and Problem Behavior in Cats and Dogs. Animals, 10(2), 318.
Read next
How to recognize stress in your dog: the signals almost everyone misses
Why is my dog shaking?
Panting is a late signal
Before a dog starts panting, he has already shown you lip licking, yawning, looking away and slowing down. Anyone who learns to read those early signals can step in while the tension is still low, and never has to wait for the panting. In the free webinar Communicating With Your Dog you see those early signals on video and learn a technique for giving your dog rest without using your voice.
Do you want to go on and learn to read and answer the whole of dog language? That is the Stressless Communication Course.
Thank you for reading, on behalf of me and all the dogs.
Dog Behavior Consultant & Natural Dog Trainer