Why Is My Dog Shaking and Sticking Her Tongue Out? | Causes

When a dog trembles and lets her tongue hang out, the scene around her tells you a lot. A dog that just finished zooming around the yard may only be cooling off. A dog doing the same thing while hunched up, drooling, or staring into space can be telling you something else.

This pair of signs does not always mean an emergency. Dogs stick their tongues out when they pant, cool down, feel anxious, or settle into deep sleep. Shaking can show up with cold, fear, pain, nausea, weakness, fever, toxin exposure, or a neurologic event.

What Those Two Signs Can Mean Together

A tongue out on its own is often just panting. Dogs do not sweat like people, so they move heat out by breathing faster and letting moisture evaporate from the mouth and tongue. If your dog is also shaking, ask one simple question: did this start after a clear trigger, or did it come out of nowhere?

A clear trigger might be a hot walk, a loud storm, a car ride, a nail trim, or rough play. In those moments, the body is full of adrenaline. Muscles can quiver, breathing speeds up, and the tongue comes out. That kind of episode should fade once the trigger is gone and your dog settles.

An episode with no clear trigger deserves more caution. Shaking plus heavy panting can show up with pain, belly trouble, toxin exposure, heat illness, airway trouble, or seizure activity. If your dog is at rest, cannot settle, or looks off in the eyes, treat it as more than a quirky habit.

Dog Shaking And Tongue Out After Play, Fear, Or Pain

After exercise or heat

After a run, a dog may pant hard with her tongue lolling while the legs or shoulders quiver. That can be a plain cooldown response. It should ease within a short stretch of quiet rest in a cool spot. If the panting keeps ramping up, the gums turn dark red or pale, or your dog seems weak, you need urgent care.

During fear or stress

Thunder, fireworks, new visitors, car rides, and vet trips can all bring on trembling and panting. Some dogs also pace, drool, cling, hide, or whine. Once the noise stops or the scary moment passes, the breathing and shaking should ease.

With pain or nausea

Pain changes body language fast. A sore dog may shake, pant with the tongue out, stand with a tucked belly, refuse food, or guard one spot when touched. Nausea can look similar, especially if you see lip licking, drooling, swallowing, or vomiting. Those signs call for a same-day vet visit even if your dog is still walking around.

Pattern You See	What It May Point To	How Fast To Act
After hard play on a warm day	Cooling down, overexertion, heat stress	Rest at once; urgent care if it does not ease fast
During thunder, fireworks, or travel	Fear, motion sickness, adrenaline surge	Watch closely; call your vet if it keeps repeating
At rest with a hunched body or limping	Pain from injury, spine trouble, belly pain	Same-day vet visit
With drooling, lip licking, or vomiting	Nausea, toxin exposure, stomach illness	Same-day vet visit; urgent if toxin is possible
Flat-faced dog making loud breathing noise	Airway strain or overheating	Urgent care
Stiff body, paddling, staring, or collapse	Seizure or fainting spell	Emergency care now
Blue, gray, or pale gums	Low oxygen or poor circulation	Emergency care now
After chewing medicine, chocolate, xylitol, or plants	Poisoning or drug reaction	Emergency call now

Red Flags That Mean You Should Not Wait

Cornell’s page on canine respiratory distress lists open-mouth breathing, a stretched neck, elbows held away from the chest, blue gums, and panic as danger signs. If you see those signs, keep your dog calm and go in right away.

VCA’s article on common emergencies in dogs also treats breathing trouble, seizures, collapse, heat illness, and poison exposure as urgent. That matters here because shaking and tongue-out panting can sit inside several of those problems.

• Breathing that looks like hard work, not plain panting
• Blue, gray, white, or muddy gums
• Collapse, fainting, or trouble standing
• Repeated vomiting, swollen belly, or nonstop drooling
• Seizure signs, repeated twitching, or a spell that lasts more than a few minutes
• Known or suspected access to medicine, chocolate, xylitol, rodent bait, or cannabis
• Heat exposure with weakness, glassy eyes, or heavy panting that will not slow

If poisoning is even a remote possibility, call your vet or ASPCA Poison Control right away. Do not wait for the shaking to get worse. Many toxins move fast, and early treatment can change the outcome.

What To Do In The Next Ten Minutes

1. Move your dog to a quiet, cool area with fresh air. Keep activity low.
2. Check the gums. Healthy gums are usually pink and moist.
3. Watch the breathing. Ask whether it is slowing with rest or still climbing.
4. Check for heat, injury, vomiting, diarrhea, belly swelling, or anything chewed up nearby.
5. Take a short video. A vet can learn a lot from posture, eye movement, and breathing sound.
6. Offer water only if your dog is fully alert and able to swallow normally.
7. Do not give human pain pills, do not force food, and do not put your hands near the mouth during a seizure.

If A Seizure Is On The List

Clear nearby objects, dim the room, and time the event. Do not try to hold the tongue. Dogs do not swallow their tongues.

Right After The Episode

Many dogs pant hard, seem dazed, pace, or shake for a while. That still needs a vet call, and an emergency trip if the seizure is long or repeats.

What To Note	Why It Helps	What To Tell The Vet
Time the episode started	Shows how long the event lasted	“She began shaking at 7:10 p.m.”
What happened right before it	May reveal heat, fear, food, or toxin triggers	“This started ten minutes after a walk.”
Breathing sound and body posture	Helps sort airway trouble from fear or pain	“She was open-mouth breathing with her neck stretched out.”
Any vomiting, drooling, or diarrhea	Points toward stomach illness or poisoning	“She vomited once and kept swallowing.”
Access to food, meds, or chemicals	Speeds up treatment choices	“A gum pack was torn open on the floor.”

When Breed, Age, And Timing Change The Picture

Puppies and tiny dogs

Small pups can shake from cold, low blood sugar, pain, stomach upset, or plain overstimulation. A puppy that is limp, weak, not eating, or vomiting should be seen fast. Young dogs can go downhill quicker than sturdy adults.

Older dogs

In seniors, shaking and tongue-out panting can be tied to pain from joints or spine, dental pain, heart or lung disease, belly pain, or neurologic trouble. If this is new in an older dog, do not brush it off as age.

Flat-faced breeds

Pugs, Bulldogs, Boston Terriers, and other flat-faced dogs have less room in the airway and can tip into breathing strain faster than long-nosed breeds. A bit of heat, stress, or exercise can push them from noisy panting into real distress.

Sleep versus wake time

Some dogs sleep with the tip of the tongue peeking out. That alone is often harmless. Add repeated shaking while asleep, paddling, loss of bladder control, or trouble waking your dog, and the story changes. Get video if you can do it safely.

What May Be Mild And What Needs A Vet Visit Soon

A brief episode can be mild if there is an obvious trigger, your dog stays bright, the gums stay pink, and the signs fade with rest. That includes a stressful car ride, a chilly bath, or a short burst of rough play.

Book a prompt vet visit if the pattern keeps coming back, starts happening at rest, or comes with appetite loss, limping, coughing, drooling, vomiting, or odd behavior. Repeated episodes often give the first clue to pain, airway disease, stomach trouble, or a neurologic issue that is easier to treat early.

Your dog does not need a perfect symptom list before you call. If she is shaking, panting with her tongue out, and just does not look like herself, trust that change. You know her normal face, normal posture, and normal recovery time better than anyone else in the room.